diff --git a/.github/ISSUE_TEMPLATE/bug_report.yml b/.github/ISSUE_TEMPLATE/bug_report.yml
index 7d44bb148..7ba4608bf 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report.yml
@@ -1,5 +1,5 @@
 name: I think I found a bug
-description: File a bug report issue
+description: File a bug report issue. If you have a question or are experiencing a problem, please start a [new discussion](https://github.com/stalwartlabs/mail-server/discussions/new?category=q-a) instead.
 title: "[bug]: "
 labels: ["bug"]
 body:
@@ -33,8 +33,7 @@ body:
       options:
         - v0.8.x
         - v0.7.x
-        - v0.6.x
-        - v0.5.x or lower
+        - v0.6.x or lower
     validations:
       required: true
   - type: dropdown
diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml
index ae13162e7..942d54a4b 100644
--- a/.github/ISSUE_TEMPLATE/config.yml
+++ b/.github/ISSUE_TEMPLATE/config.yml
@@ -9,3 +9,6 @@ contact_links:
   - name: Join Stalwart's Discord
     url: https://discord.gg/aVQr3jF8jd
     about: Join our Discord server for help, discussions and release announcements.
+  - name: Join Stalwart's Matrix
+    url: https://matrix.to/#/#stalwart:matrix.org
+    about: Join our Matrix room for help, discussions and release announcements.
diff --git a/Cargo.lock b/Cargo.lock
index 19563f8cb..654eaa7d8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1890,6 +1890,14 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c34f04666d835ff5d62e058c3995147c06f42fe86ff053337632bca83e42702d"
 
+[[package]]
+name = "enterprise"
+version = "0.8.2"
+dependencies = [
+ "base64 0.22.1",
+ "ring 0.17.8",
+]
+
 [[package]]
 name = "enum-as-inner"
 version = "0.6.0"
diff --git a/Cargo.toml b/Cargo.toml
index e1208b2d0..cc70b7da2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ members = [
     "crates/nlp",
     "crates/store",
     "crates/directory",
+    "crates/enterprise",
     "crates/utils",
     "crates/common",
     "crates/cli",
diff --git a/LICENSE b/LICENSE
deleted file mode 100644
index 0ad25db4b..000000000
--- a/LICENSE
+++ /dev/null
@@ -1,661 +0,0 @@
-                    GNU AFFERO GENERAL PUBLIC LICENSE
-                       Version 3, 19 November 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-                            Preamble
-
-  The GNU Affero General Public License is a free, copyleft license for
-software and other kinds of works, specifically designed to ensure
-cooperation with the community in the case of network server software.
-
-  The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works.  By contrast,
-our General Public Licenses are intended to guarantee your freedom to
-share and change all versions of a program--to make sure it remains free
-software for all its users.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-  Developers that use our General Public Licenses protect your rights
-with two steps: (1) assert copyright on the software, and (2) offer
-you this License which gives you legal permission to copy, distribute
-and/or modify the software.
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-  A secondary benefit of defending all users' freedom is that
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-incorporate.  Many developers of free software are heartened and
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-software used on network servers, this result may fail to come about.
-The GNU General Public License permits making a modified version and
-letting the public access it on a server without ever releasing its
-source code to the public.
-
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-a publicly accessible server, gives the public access to the source
-code of the modified version.
-
-  An older license, called the Affero General Public License and
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-  13. Remote Network Interaction; Use with the GNU General Public License.
-
-  Notwithstanding any other provision of this License, if you modify the
-Program, your modified version must prominently offer all users
-interacting with it remotely through a computer network (if your version
-supports such interaction) an opportunity to receive the Corresponding
-Source of your version by providing access to the Corresponding Source
-from a network server at no charge, through some standard or customary
-means of facilitating copying of software.  This Corresponding Source
-shall include the Corresponding Source for any work covered by version 3
-of the GNU General Public License that is incorporated pursuant to the
-following paragraph.
-
-  Notwithstanding any other provision of this License, you have
-permission to link or combine any covered work with a work licensed
-under version 3 of the GNU General Public License into a single
-combined work, and to convey the resulting work.  The terms of this
-License will continue to apply to the part which is the covered work,
-but the work with which it is combined will remain governed by version
-3 of the GNU General Public License.
-
-  14. Revised Versions of this License.
-
-  The Free Software Foundation may publish revised and/or new versions of
-the GNU Affero General Public License from time to time.  Such new versions
-will be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
-
-  Each version is given a distinguishing version number.  If the
-Program specifies that a certain numbered version of the GNU Affero General
-Public License "or any later version" applies to it, you have the
-option of following the terms and conditions either of that numbered
-version or of any later version published by the Free Software
-Foundation.  If the Program does not specify a version number of the
-GNU Affero General Public License, you may choose any version ever published
-by the Free Software Foundation.
-
-  If the Program specifies that a proxy can decide which future
-versions of the GNU Affero General Public License can be used, that proxy's
-public statement of acceptance of a version permanently authorizes you
-to choose that version for the Program.
-
-  Later license versions may give you additional or different
-permissions.  However, no additional obligations are imposed on any
-author or copyright holder as a result of your choosing to follow a
-later version.
-
-  15. Disclaimer of Warranty.
-
-  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
-OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
-THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
-IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
-ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
-
-  16. Limitation of Liability.
-
-  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
-THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
-GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
-USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
-DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
-PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
-EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGES.
-
-  17. Interpretation of Sections 15 and 16.
-
-  If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
-                     END OF TERMS AND CONDITIONS
-
-            How to Apply These Terms to Your New Programs
-
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-state the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) <year>  <name of author>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as published
-    by the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
-
-    You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-Also add information on how to contact you by electronic and paper mail.
-
-  If your software can interact with users remotely through a computer
-network, you should also make sure that it provides a way for users to
-get its source.  For example, if your program is a web application, its
-interface could display a "Source" link that leads users to an archive
-of the code.  There are many ways you could offer source, and different
-solutions will be better for different programs; see section 13 for the
-specific requirements.
-
-  You should also get your employer (if you work as a programmer) or school,
-if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU AGPL, see
-<https://www.gnu.org/licenses/>.
diff --git a/LICENSES/AGPL-3.0-only.txt b/LICENSES/AGPL-3.0-only.txt
new file mode 100644
index 000000000..0c97efd25
--- /dev/null
+++ b/LICENSES/AGPL-3.0-only.txt
@@ -0,0 +1,235 @@
+GNU AFFERO GENERAL PUBLIC LICENSE
+Version 3, 19 November 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+
+                            Preamble
+
+The GNU Affero General Public License is a free, copyleft license for software and other kinds of works, specifically designed to ensure cooperation with the community in the case of network server software.
+
+The licenses for most software and other practical works are designed to take away your freedom to share and change the works.  By contrast, our General Public Licenses are intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users.
+
+When we speak of free software, we are referring to freedom, not price.  Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
+
+Developers that use our General Public Licenses protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License which gives you legal permission to copy, distribute and/or modify the software.
+
+A secondary benefit of defending all users' freedom is that improvements made in alternate versions of the program, if they receive widespread use, become available for other developers to incorporate.  Many developers of free software are heartened and encouraged by the resulting cooperation.  However, in the case of software used on network servers, this result may fail to come about. The GNU General Public License permits making a modified version and letting the public access it on a server without ever releasing its source code to the public.
+
+The GNU Affero General Public License is designed specifically to ensure that, in such cases, the modified source code becomes available to the community.  It requires the operator of a network server to provide the source code of the modified version running there to the users of that server.  Therefore, public use of a modified version, on a publicly accessible server, gives the public access to the source code of the modified version.
+
+An older license, called the Affero General Public License and published by Affero, was designed to accomplish similar goals.  This is a different license, not a version of the Affero GPL, but Affero has released a new version of the Affero GPL which permits relicensing under this license.
+
+The precise terms and conditions for copying, distribution and modification follow.
+
+                       TERMS AND CONDITIONS
+
+0. Definitions.
+
+"This License" refers to version 3 of the GNU Affero General Public License.
+
+"Copyright" also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
+
+"The Program" refers to any copyrightable work licensed under this License.  Each licensee is addressed as "you".  "Licensees" and "recipients" may be individuals or organizations.
+
+To "modify" a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy.  The resulting work is called a "modified version" of the earlier work or a work "based on" the earlier work.
+
+A "covered work" means either the unmodified Program or a work based on the Program.
+
+To "propagate" a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy.  Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well.
+
+To "convey" a work means any kind of propagation that enables other parties to make or receive copies.  Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying.
+
+An interactive user interface displays "Appropriate Legal Notices" to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License.  If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion.
+
+1. Source Code.
+The "source code" for a work means the preferred form of the work for making modifications to it.  "Object code" means any non-source form of a work.
+
+A "Standard Interface" means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language.
+
+The "System Libraries" of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form.  A "Major Component", in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it.
+
+The "Corresponding Source" for a work in object code form means all the source code needed to generate, install, and (for an executable work) run the object code and to modify the work, including scripts to control those activities.  However, it does not include the work's System Libraries, or general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the work.  For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source.
+
+The Corresponding Source for a work in source code form is that same work.
+
+2. Basic Permissions.
+All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met.  This License explicitly affirms your unlimited permission to run the unmodified Program.  The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work.  This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.
+
+You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force.  You may convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright.  Those thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit them from making any copies of your copyrighted material outside their relationship with you.
+
+Conveying under any other circumstances is permitted solely under the conditions stated below.  Sublicensing is not allowed; section 10 makes it unnecessary.
+
+3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures.
+
+When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of technological measures.
+
+4. Conveying Verbatim Copies.
+You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program.
+
+You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee.
+
+5. Conveying Modified Source Versions.
+You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7.  This requirement modifies the requirement in section 4 to "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy.  This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged.  This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so.
+
+A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an "aggregate" if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit.  Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate.
+
+6. Conveying Non-Source Forms.
+You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source.  This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b.
+
+    d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge.  You need not require recipients to copy the Corresponding Source along with the object code.  If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the Corresponding Source.  Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and Corresponding Source of the work are being offered to the general public at no charge under subsection 6d.
+
+A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in conveying the object code work.
+
+A "User Product" is either (1) a "consumer product", which means any tangible personal property which is normally used for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling.  In determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage.  For a particular product received by a particular user, "normally used" refers to a typical or common use of that class of product, regardless of the status of the particular user or of the way in which the particular user actually uses, or expects or is expected to use, the product.  A product is a consumer product regardless of whether the product has substantial commercial, industrial or non-consumer uses, unless such uses represent the only significant mode of use of the product.
+
+"Installation Information" for a User Product means any methods, procedures, authorization keys, or other information required to install and execute modified versions of a covered work in that User Product from a modified version of its Corresponding Source.  The information must suffice to ensure that the continued functioning of the modified object code is in no case prevented or interfered with solely because modification has been made.
+
+If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information.  But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User Product (for example, the work has been installed in ROM).
+
+The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed.  Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network.
+
+Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying.
+
+7. Additional Terms.
+"Additional permissions" are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law.  If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it.  (Additional permissions may be written to require their own removal in certain cases when you modify the work.)  You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors.
+
+All other non-permissive additional terms are considered "further restrictions" within the meaning of section 10.  If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term.  If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way.
+
+8. Termination.
+
+You may not propagate or modify a covered work except as expressly provided under this License.  Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).
+
+However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.
+
+Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License.  If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10.
+
+9. Acceptance Not Required for Having Copies.
+
+You are not required to accept this License in order to receive or run a copy of the Program.  Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance.  However, nothing other than this License grants you permission to propagate or modify any covered work.  These actions infringe copyright if you do not accept this License.  Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.
+
+10. Automatic Licensing of Downstream Recipients.
+
+Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License.  You are not responsible for enforcing compliance by third parties with this License.
+
+An "entity transaction" is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations.  If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License.  For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it.
+
+11. Patents.
+
+A "contributor" is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based.  The work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version.  For purposes of this definition, "control" includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement).  To "grant" such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License.  You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.
+
+12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License.  If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
+
+13. Remote Network Interaction; Use with the GNU General Public License.
+
+Notwithstanding any other provision of this License, if you modify the Program, your modified version must prominently offer all users interacting with it remotely through a computer network (if your version supports such interaction) an opportunity to receive the Corresponding Source of your version by providing access to the Corresponding Source from a network server at no charge, through some standard or customary means of facilitating copying of software.  This Corresponding Source shall include the Corresponding Source for any work covered by version 3 of the GNU General Public License that is incorporated pursuant to the following paragraph.
+
+Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU General Public License into a single combined work, and to convey the resulting work.  The terms of this License will continue to apply to the part which is the covered work, but the work with which it is combined will remain governed by version 3 of the GNU General Public License.
+
+14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions of the GNU Affero General Public License from time to time.  Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program specifies that a certain numbered version of the GNU Affero General Public License "or any later version" applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation.  If the Program does not specify a version number of the GNU Affero General Public License, you may choose any version ever published by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions of the GNU Affero General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.
+
+Later license versions may give you additional or different permissions.  However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.
+
+15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program.  It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found.
+
+     <one line to give the program's name and a brief idea of what it does.>
+     Copyright (C) <year>  <name of author>
+
+     This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+     This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details.
+
+     You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If your software can interact with users remotely through a computer network, you should also make sure that it provides a way for users to get its source.  For example, if your program is a web application, its interface could display a "Source" link that leads users to an archive of the code.  There are many ways you could offer source, and different solutions will be better for different programs; see section 13 for the specific requirements.
+
+You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU AGPL, see <http://www.gnu.org/licenses/>.
diff --git a/LICENSES/LicenseRef-SEL.txt b/LICENSES/LicenseRef-SEL.txt
new file mode 100644
index 000000000..85fc84dc2
--- /dev/null
+++ b/LICENSES/LicenseRef-SEL.txt
@@ -0,0 +1,63 @@
+Stalwart Enterprise License 1.0 (SELv1) Agreement
+=================================================
+
+Last Update: June 25, 2024
+
+GRANT OF LICENSE
+
+Stalwart Labs Ltd. ("Licensor") grants you ("Licensee") a non-exclusive, non-transferable, non-sublicensable, limited license to use the software ("Software") under the terms set forth in this Stalwart Enterprise License Agreement ("Agreement").
+
+LICENSE RESTRICTIONS
+
+1. Commercial Use: Licensee is authorized to use the Software for commercial purposes, including the provision of services utilizing the Software. However, Licensee is expressly prohibited from reselling, leasing, sublicensing, or otherwise redistributing the Software itself.
+
+2. Subscription Requirement: The use of the Software is conditioned upon Licensee maintaining an active and valid paid subscription with Licensor. The Software shall not be used without a valid subscription.
+
+3. Source-Available Commercial License: The Software provided under this Agreement is not open source. Accordingly, the Software may not be distributed or modified by Licensee. While the source code may be available for review, it is not open source and remains proprietary.
+
+4. Additional Licensing Terms: This license is further governed by the terms and conditions set forth in any licensing agreements separately executed between Licensor and Licensee. In the event of any conflict between the terms of this Agreement and the terms of a signed licensing agreement, the terms of the signed licensing agreement shall control.
+
+
+INTELLECTUAL PROPERTY RIGHTS
+
+1. Ownership: The Licensor retains all rights, title, and interest in and to the Software, including all intellectual property rights therein. This Agreement does not transfer any ownership rights to the Licensee.
+
+2. Proprietary Notices: The Licensee must not remove, alter, or obscure any proprietary notices (including copyright and trademark notices) on the Software.
+
+
+TERMINATION
+
+1. Termination by Licensor: The Licensor may terminate this Agreement immediately if the Licensee fails to comply with any terms and conditions of this Agreement.
+
+2. Effect of Termination: Upon termination of this Agreement, the Licensee must cease all use of the Software and destroy all copies of the Software in their possession or control.
+
+
+DISCLAIMER OF WARRANTIES
+
+The Software is provided "as is" without warranty of any kind. The Licensor disclaims all warranties, express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, and non-infringement.
+
+
+LIMITATION OF LIABILITY
+
+In no event will the Licensor be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of profits or revenues, whether incurred directly or indirectly, or any loss of data, use, goodwill, or other intangible losses, resulting from (i) your use or inability to use the Software; (ii) any unauthorized access to or use of our servers and/or any personal information stored therein.
+
+
+GOVERNING LAW
+
+This Agreement shall be governed by and construed in accordance with the laws of the United Kingdom, without regard to its conflict of law principles.
+
+
+ENTIRE AGREEMENT
+
+This Agreement constitutes the entire agreement between the Licensor and the Licensee with respect to the subject matter hereof and supersedes all prior or contemporaneous understandings regarding such subject matter. No amendment to or modification of this Agreement will be binding unless in writing and signed by the Licensor.
+
+
+CONTACT INFORMATION
+
+If you have any questions about this Agreement, please contact Stalwart Labs Ltd. at:
+
+Stalwart Labs Ltd.
+128 City Road
+London, United Kingdom
+hello@stalw.art
+
diff --git a/README.md b/README.md
index 565185bab..ddbbf5133 100644
--- a/README.md
+++ b/README.md
@@ -123,11 +123,9 @@ Additionally you may become a sponsor to obtain priority support from Stalwart L
 
 ## Roadmap
 
-- [x] Performance enhancements
-- [x] Distributed SMTP queues
-- [x] Web-based admin panel
 - [ ] JMAP Calendar, Contacts and Tasks support
 - [ ] CalDAV and CardDAV support
+- [ ] ActiveSync support
 
 See the [open issues](https://github.com/stalwartlabs/mail-server/issues) for a full list of proposed features (and known issues).
 
@@ -139,13 +137,13 @@ If you find the project useful you can help by [becoming a sponsor](https://libe
 
 ## License
 
-Licensed under the terms of the [GNU Affero General Public License](https://www.gnu.org/licenses/agpl-3.0.en.html) as published by
-the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
-See [LICENSE](LICENSE) for more details.
+This project is dual-licensed under the **GNU Affero General Public License v3.0** (AGPL-3.0; as published by the Free Software Foundation) and the **Stalwart Enterprise License v1 (SELv1)**:
+
+- The [GNU Affero General Public License v3.0](./LICENSES/AGPL-3.0-only.txt) is a free software license that ensures your freedom to use, modify, and distribute the software, with the condition that any modified versions of the software must also be distributed under the same license. 
+- The [Stalwart Enterprise License v1 (SELv1)](./LICENSES/LicenseRef-SEL.txt) is a proprietary license designed for commercial use. It offers additional features and greater flexibility for businesses that do not wish to comply with the AGPL-3.0 license requirements. 
+
+Each file in this project contains a license notice at the top, indicating the applicable license(s). The license notice follows the [REUSE guidelines](https://reuse.software/) to ensure clarity and consistency. The full text of each license is available in the [LICENSES](./LICENSES/) directory.
 
-You can be released from the requirements of the AGPLv3 license by purchasing
-a commercial license. Please contact licensing@stalw.art for more details.
-  
 ## Copyright
 
 Copyright (C) 2024, Stalwart Labs Ltd.
diff --git a/crates/cli/src/main.rs b/crates/cli/src/main.rs
index 51e86a065..27c65e6f5 100644
--- a/crates/cli/src/main.rs
+++ b/crates/cli/src/main.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::HashMap,
diff --git a/crates/cli/src/modules/account.rs b/crates/cli/src/modules/account.rs
index 0ae35f686..4204d132f 100644
--- a/crates/cli/src/modules/account.rs
+++ b/crates/cli/src/modules/account.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/cli/src/modules/cli.rs b/crates/cli/src/modules/cli.rs
index 41e547237..865b7c8e4 100644
--- a/crates/cli/src/modules/cli.rs
+++ b/crates/cli/src/modules/cli.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use clap::{Parser, Subcommand, ValueEnum};
 use jmap_client::client::Credentials;
diff --git a/crates/cli/src/modules/database.rs b/crates/cli/src/modules/database.rs
index 4c200ffef..3ba06598a 100644
--- a/crates/cli/src/modules/database.rs
+++ b/crates/cli/src/modules/database.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::collections::HashMap;
 
diff --git a/crates/cli/src/modules/domain.rs b/crates/cli/src/modules/domain.rs
index 4e4119eb6..bc0dd898d 100644
--- a/crates/cli/src/modules/domain.rs
+++ b/crates/cli/src/modules/domain.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/cli/src/modules/export.rs b/crates/cli/src/modules/export.rs
index 4207e3b8b..1bb6aeeb8 100644
--- a/crates/cli/src/modules/export.rs
+++ b/crates/cli/src/modules/export.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     path::{Path, PathBuf},
diff --git a/crates/cli/src/modules/group.rs b/crates/cli/src/modules/group.rs
index e872d931b..f658dc0e0 100644
--- a/crates/cli/src/modules/group.rs
+++ b/crates/cli/src/modules/group.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::vec;
 
diff --git a/crates/cli/src/modules/import.rs b/crates/cli/src/modules/import.rs
index aae5e999a..eea73f9ec 100644
--- a/crates/cli/src/modules/import.rs
+++ b/crates/cli/src/modules/import.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::{HashMap, HashSet},
diff --git a/crates/cli/src/modules/list.rs b/crates/cli/src/modules/list.rs
index 7ca475c95..e14f6f98d 100644
--- a/crates/cli/src/modules/list.rs
+++ b/crates/cli/src/modules/list.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::vec;
 
diff --git a/crates/cli/src/modules/mod.rs b/crates/cli/src/modules/mod.rs
index 4f304f9f7..a9d5eb5c4 100644
--- a/crates/cli/src/modules/mod.rs
+++ b/crates/cli/src/modules/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{collections::HashMap, fmt::Display, io::Read};
 
diff --git a/crates/cli/src/modules/queue.rs b/crates/cli/src/modules/queue.rs
index 8bac4887d..68d2e56e1 100644
--- a/crates/cli/src/modules/queue.rs
+++ b/crates/cli/src/modules/queue.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::{
     cli::{Client, QueueCommands},
diff --git a/crates/cli/src/modules/report.rs b/crates/cli/src/modules/report.rs
index ef019ffb3..823c4c50a 100644
--- a/crates/cli/src/modules/report.rs
+++ b/crates/cli/src/modules/report.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::cli::{Client, ReportCommands, ReportFormat};
 use crate::modules::{queue::deserialize_datetime, List};
diff --git a/crates/common/src/addresses.rs b/crates/common/src/addresses.rs
index 75fa1d018..24636d29c 100644
--- a/crates/common/src/addresses.rs
+++ b/crates/common/src/addresses.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/common/src/config/imap.rs b/crates/common/src/config/imap.rs
index 0e734ba32..f488b0f04 100644
--- a/crates/common/src/config/imap.rs
+++ b/crates/common/src/config/imap.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/common/src/config/jmap/capabilities.rs b/crates/common/src/config/jmap/capabilities.rs
index 8e21ae765..c922c5021 100644
--- a/crates/common/src/config/jmap/capabilities.rs
+++ b/crates/common/src/config/jmap/capabilities.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use ahash::AHashSet;
 use jmap_proto::{
     request::capability::{
diff --git a/crates/common/src/config/jmap/mod.rs b/crates/common/src/config/jmap/mod.rs
index 0b6492c29..bc13448bb 100644
--- a/crates/common/src/config/jmap/mod.rs
+++ b/crates/common/src/config/jmap/mod.rs
@@ -1,2 +1,8 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 pub mod capabilities;
 pub mod settings;
diff --git a/crates/common/src/config/jmap/settings.rs b/crates/common/src/config/jmap/settings.rs
index 19fddd925..580bcd949 100644
--- a/crates/common/src/config/jmap/settings.rs
+++ b/crates/common/src/config/jmap/settings.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use std::{str::FromStr, time::Duration};
 
 use jmap_proto::request::capability::BaseCapabilities;
diff --git a/crates/common/src/config/mod.rs b/crates/common/src/config/mod.rs
index 1f9d817f6..8af9b8505 100644
--- a/crates/common/src/config/mod.rs
+++ b/crates/common/src/config/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/common/src/config/network.rs b/crates/common/src/config/network.rs
index 1a610565b..50eb0f24f 100644
--- a/crates/common/src/config/network.rs
+++ b/crates/common/src/config/network.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{str::FromStr, time::Duration};
 
diff --git a/crates/common/src/config/scripts.rs b/crates/common/src/config/scripts.rs
index e416a9c89..7209e820b 100644
--- a/crates/common/src/config/scripts.rs
+++ b/crates/common/src/config/scripts.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::HashSet,
diff --git a/crates/common/src/config/server/listener.rs b/crates/common/src/config/server/listener.rs
index 04756b18c..b9445cbc6 100644
--- a/crates/common/src/config/server/listener.rs
+++ b/crates/common/src/config/server/listener.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{net::SocketAddr, sync::Arc, time::Duration};
 
diff --git a/crates/common/src/config/server/mod.rs b/crates/common/src/config/server/mod.rs
index 6b1b32328..c6a5b3abc 100644
--- a/crates/common/src/config/server/mod.rs
+++ b/crates/common/src/config/server/mod.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use std::{fmt::Display, net::SocketAddr, time::Duration};
 
 use ahash::AHashMap;
diff --git a/crates/common/src/config/server/tls.rs b/crates/common/src/config/server/tls.rs
index ca880116a..62c12b03e 100644
--- a/crates/common/src/config/server/tls.rs
+++ b/crates/common/src/config/server/tls.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     io::Cursor,
diff --git a/crates/common/src/config/smtp/auth.rs b/crates/common/src/config/smtp/auth.rs
index db4617899..0dfdd4f04 100644
--- a/crates/common/src/config/smtp/auth.rs
+++ b/crates/common/src/config/smtp/auth.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use std::{sync::Arc, time::Duration};
 
 use ahash::AHashMap;
diff --git a/crates/common/src/config/smtp/mod.rs b/crates/common/src/config/smtp/mod.rs
index f5eba933f..64e7e41d8 100644
--- a/crates/common/src/config/smtp/mod.rs
+++ b/crates/common/src/config/smtp/mod.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use utils::config::{Config, Rate};
 
 pub mod auth;
diff --git a/crates/common/src/config/smtp/queue.rs b/crates/common/src/config/smtp/queue.rs
index d543d0e90..a017b5277 100644
--- a/crates/common/src/config/smtp/queue.rs
+++ b/crates/common/src/config/smtp/queue.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use ahash::AHashMap;
 use mail_auth::IpLookupStrategy;
 use mail_send::Credentials;
diff --git a/crates/common/src/config/smtp/report.rs b/crates/common/src/config/smtp/report.rs
index 43b0d9bc9..b8e47c0f9 100644
--- a/crates/common/src/config/smtp/report.rs
+++ b/crates/common/src/config/smtp/report.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use std::time::Duration;
 
 use utils::config::{utils::ParseValue, Config};
diff --git a/crates/common/src/config/smtp/resolver.rs b/crates/common/src/config/smtp/resolver.rs
index 51ead82e4..cfac607c3 100644
--- a/crates/common/src/config/smtp/resolver.rs
+++ b/crates/common/src/config/smtp/resolver.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use std::{
     fmt::Display,
     hash::{DefaultHasher, Hash, Hasher},
diff --git a/crates/common/src/config/smtp/session.rs b/crates/common/src/config/smtp/session.rs
index ce3927dfb..d9698dd08 100644
--- a/crates/common/src/config/smtp/session.rs
+++ b/crates/common/src/config/smtp/session.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use std::{
     net::{SocketAddr, ToSocketAddrs},
     str::FromStr,
diff --git a/crates/common/src/config/smtp/throttle.rs b/crates/common/src/config/smtp/throttle.rs
index b8bfd8352..4c16bba4b 100644
--- a/crates/common/src/config/smtp/throttle.rs
+++ b/crates/common/src/config/smtp/throttle.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::config::{utils::AsKey, Config, Rate};
 
diff --git a/crates/common/src/config/storage.rs b/crates/common/src/config/storage.rs
index f34248f37..3ab8ec8bc 100644
--- a/crates/common/src/config/storage.rs
+++ b/crates/common/src/config/storage.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/common/src/config/tracers.rs b/crates/common/src/config/tracers.rs
index f8ea7b051..76ed7fc8a 100644
--- a/crates/common/src/config/tracers.rs
+++ b/crates/common/src/config/tracers.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{collections::HashMap, str::FromStr};
 
diff --git a/crates/common/src/expr/eval.rs b/crates/common/src/expr/eval.rs
index 19bb3bff4..937222e0a 100644
--- a/crates/common/src/expr/eval.rs
+++ b/crates/common/src/expr/eval.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, cmp::Ordering, fmt::Display};
 
diff --git a/crates/common/src/expr/functions/array.rs b/crates/common/src/expr/functions/array.rs
index 12868067a..0382c7056 100644
--- a/crates/common/src/expr/functions/array.rs
+++ b/crates/common/src/expr/functions/array.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::expr::Variable;
 
diff --git a/crates/common/src/expr/functions/email.rs b/crates/common/src/expr/functions/email.rs
index 42a6d318f..072eb5fea 100644
--- a/crates/common/src/expr/functions/email.rs
+++ b/crates/common/src/expr/functions/email.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/common/src/expr/functions/misc.rs b/crates/common/src/expr/functions/misc.rs
index 6947abf4e..76960f797 100644
--- a/crates/common/src/expr/functions/misc.rs
+++ b/crates/common/src/expr/functions/misc.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::net::IpAddr;
 
diff --git a/crates/common/src/expr/functions/mod.rs b/crates/common/src/expr/functions/mod.rs
index e3491cb5e..94646b369 100644
--- a/crates/common/src/expr/functions/mod.rs
+++ b/crates/common/src/expr/functions/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/common/src/expr/functions/text.rs b/crates/common/src/expr/functions/text.rs
index 9cbce6088..7bb6cf00f 100644
--- a/crates/common/src/expr/functions/text.rs
+++ b/crates/common/src/expr/functions/text.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/common/src/expr/if_block.rs b/crates/common/src/expr/if_block.rs
index c1196fa28..5254cbf16 100644
--- a/crates/common/src/expr/if_block.rs
+++ b/crates/common/src/expr/if_block.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::config::{utils::AsKey, Config};
 
diff --git a/crates/common/src/expr/mod.rs b/crates/common/src/expr/mod.rs
index bad63d02d..5c5b56494 100644
--- a/crates/common/src/expr/mod.rs
+++ b/crates/common/src/expr/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     borrow::Cow,
diff --git a/crates/common/src/expr/parser.rs b/crates/common/src/expr/parser.rs
index 2685383f9..28fc07564 100644
--- a/crates/common/src/expr/parser.rs
+++ b/crates/common/src/expr/parser.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::{tokenizer::Tokenizer, BinaryOperator, Expression, ExpressionItem, Token};
 
diff --git a/crates/common/src/expr/tokenizer.rs b/crates/common/src/expr/tokenizer.rs
index c0930effd..da949981a 100644
--- a/crates/common/src/expr/tokenizer.rs
+++ b/crates/common/src/expr/tokenizer.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, iter::Peekable, slice::Iter, time::Duration};
 
diff --git a/crates/common/src/lib.rs b/crates/common/src/lib.rs
index 872c4b640..380303ebe 100644
--- a/crates/common/src/lib.rs
+++ b/crates/common/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, net::IpAddr, sync::Arc};
 
@@ -68,7 +51,7 @@ pub mod manager;
 pub mod scripts;
 pub mod webhooks;
 
-pub static USER_AGENT: &str = concat!("StalwartMail/", env!("CARGO_PKG_VERSION"),);
+pub static USER_AGENT: &str = concat!("Stalwart/", env!("CARGO_PKG_VERSION"),);
 pub static DAEMON_NAME: &str = concat!("Stalwart Mail Server v", env!("CARGO_PKG_VERSION"),);
 
 pub const IPC_CHANNEL_BUFFER: usize = 1024;
diff --git a/crates/common/src/listener/acme/cache.rs b/crates/common/src/listener/acme/cache.rs
index a3b1958bb..43a6d7a73 100644
--- a/crates/common/src/listener/acme/cache.rs
+++ b/crates/common/src/listener/acme/cache.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::io::ErrorKind;
 
diff --git a/crates/common/src/listener/acme/mod.rs b/crates/common/src/listener/acme/mod.rs
index ceb6a07ec..569cca894 100644
--- a/crates/common/src/listener/acme/mod.rs
+++ b/crates/common/src/listener/acme/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod cache;
 pub mod directory;
diff --git a/crates/common/src/listener/acme/resolver.rs b/crates/common/src/listener/acme/resolver.rs
index a283162a6..b02086580 100644
--- a/crates/common/src/listener/acme/resolver.rs
+++ b/crates/common/src/listener/acme/resolver.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/common/src/listener/blocked.rs b/crates/common/src/listener/blocked.rs
index 75a62a2f9..e5efaea55 100644
--- a/crates/common/src/listener/blocked.rs
+++ b/crates/common/src/listener/blocked.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fmt::Debug, net::IpAddr, sync::atomic::AtomicU8};
 
diff --git a/crates/common/src/listener/limiter.rs b/crates/common/src/listener/limiter.rs
index 0ff22acf8..2b2a8fa73 100644
--- a/crates/common/src/listener/limiter.rs
+++ b/crates/common/src/listener/limiter.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     sync::{
diff --git a/crates/common/src/listener/listen.rs b/crates/common/src/listener/listen.rs
index f9a8273be..27645125c 100644
--- a/crates/common/src/listener/listen.rs
+++ b/crates/common/src/listener/listen.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     net::{IpAddr, SocketAddr},
diff --git a/crates/common/src/listener/mod.rs b/crates/common/src/listener/mod.rs
index 2f19efb90..45c74ba31 100644
--- a/crates/common/src/listener/mod.rs
+++ b/crates/common/src/listener/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, net::IpAddr, sync::Arc};
 
diff --git a/crates/common/src/listener/stream.rs b/crates/common/src/listener/stream.rs
index d01e71740..4f5e18a85 100644
--- a/crates/common/src/listener/stream.rs
+++ b/crates/common/src/listener/stream.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/common/src/listener/tls.rs b/crates/common/src/listener/tls.rs
index 2b39832f6..12e922cba 100644
--- a/crates/common/src/listener/tls.rs
+++ b/crates/common/src/listener/tls.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     cmp::Ordering,
diff --git a/crates/common/src/manager/backup.rs b/crates/common/src/manager/backup.rs
index 19c96ec01..f48ec89e2 100644
--- a/crates/common/src/manager/backup.rs
+++ b/crates/common/src/manager/backup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::BTreeSet,
diff --git a/crates/common/src/manager/boot.rs b/crates/common/src/manager/boot.rs
index 3e2839b05..407752a49 100644
--- a/crates/common/src/manager/boot.rs
+++ b/crates/common/src/manager/boot.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::path::PathBuf;
 
diff --git a/crates/common/src/manager/config.rs b/crates/common/src/manager/config.rs
index 5103cae09..81dbc1fba 100644
--- a/crates/common/src/manager/config.rs
+++ b/crates/common/src/manager/config.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::{btree_map::Entry, BTreeMap},
diff --git a/crates/common/src/manager/mod.rs b/crates/common/src/manager/mod.rs
index 66164f51d..a5cc7e42c 100644
--- a/crates/common/src/manager/mod.rs
+++ b/crates/common/src/manager/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/common/src/manager/reload.rs b/crates/common/src/manager/reload.rs
index 5342766a3..ec97ff2d6 100644
--- a/crates/common/src/manager/reload.rs
+++ b/crates/common/src/manager/reload.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashSet;
 use arc_swap::ArcSwap;
diff --git a/crates/common/src/manager/restore.rs b/crates/common/src/manager/restore.rs
index 1d9c633ab..0f5cf44c3 100644
--- a/crates/common/src/manager/restore.rs
+++ b/crates/common/src/manager/restore.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     io::ErrorKind,
diff --git a/crates/common/src/manager/webadmin.rs b/crates/common/src/manager/webadmin.rs
index d9b19e4c4..9a92f11f2 100644
--- a/crates/common/src/manager/webadmin.rs
+++ b/crates/common/src/manager/webadmin.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     io::{self, Cursor, Read},
diff --git a/crates/common/src/scripts/functions/array.rs b/crates/common/src/scripts/functions/array.rs
index 0d3c49cac..832c727b6 100644
--- a/crates/common/src/scripts/functions/array.rs
+++ b/crates/common/src/scripts/functions/array.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::collections::{HashMap, HashSet};
 
diff --git a/crates/common/src/scripts/functions/email.rs b/crates/common/src/scripts/functions/email.rs
index 87e54be83..4234fb524 100644
--- a/crates/common/src/scripts/functions/email.rs
+++ b/crates/common/src/scripts/functions/email.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use sieve::{runtime::Variable, Context};
 
diff --git a/crates/common/src/scripts/functions/header.rs b/crates/common/src/scripts/functions/header.rs
index 8038fc115..5a1bb9b37 100644
--- a/crates/common/src/scripts/functions/header.rs
+++ b/crates/common/src/scripts/functions/header.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mail_parser::{parsers::fields::thread::thread_name, HeaderName, HeaderValue, MimeHeaders};
 use sieve::{compiler::ReceivedPart, runtime::Variable, Context};
diff --git a/crates/common/src/scripts/functions/html.rs b/crates/common/src/scripts/functions/html.rs
index 114a0768a..5f565f5c2 100644
--- a/crates/common/src/scripts/functions/html.rs
+++ b/crates/common/src/scripts/functions/html.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/common/src/scripts/functions/image.rs b/crates/common/src/scripts/functions/image.rs
index e0192ae58..5d99187d2 100644
--- a/crates/common/src/scripts/functions/image.rs
+++ b/crates/common/src/scripts/functions/image.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use sieve::{runtime::Variable, Context};
 
diff --git a/crates/common/src/scripts/functions/misc.rs b/crates/common/src/scripts/functions/misc.rs
index a1a1dd65f..2d4c65f56 100644
--- a/crates/common/src/scripts/functions/misc.rs
+++ b/crates/common/src/scripts/functions/misc.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::net::IpAddr;
 
diff --git a/crates/common/src/scripts/functions/mod.rs b/crates/common/src/scripts/functions/mod.rs
index 38d371ab0..31aca0196 100644
--- a/crates/common/src/scripts/functions/mod.rs
+++ b/crates/common/src/scripts/functions/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 mod array;
 mod email;
diff --git a/crates/common/src/scripts/functions/text.rs b/crates/common/src/scripts/functions/text.rs
index 58767656b..33d9a25fe 100644
--- a/crates/common/src/scripts/functions/text.rs
+++ b/crates/common/src/scripts/functions/text.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use sieve::{runtime::Variable, Context};
 
diff --git a/crates/common/src/scripts/functions/unicode.rs b/crates/common/src/scripts/functions/unicode.rs
index 84c5daae2..d11d09f80 100644
--- a/crates/common/src/scripts/functions/unicode.rs
+++ b/crates/common/src/scripts/functions/unicode.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use sieve::{runtime::Variable, Context};
 use unicode_security::MixedScript;
diff --git a/crates/common/src/scripts/functions/url.rs b/crates/common/src/scripts/functions/url.rs
index d2cc2f439..b6afd607b 100644
--- a/crates/common/src/scripts/functions/url.rs
+++ b/crates/common/src/scripts/functions/url.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use hyper::Uri;
 use sieve::{runtime::Variable, Context};
diff --git a/crates/common/src/scripts/mod.rs b/crates/common/src/scripts/mod.rs
index 229f0feb4..d03848750 100644
--- a/crates/common/src/scripts/mod.rs
+++ b/crates/common/src/scripts/mod.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use std::sync::Arc;
 
 use sieve::{runtime::Variable, Envelope};
diff --git a/crates/common/src/scripts/plugins/bayes.rs b/crates/common/src/scripts/plugins/bayes.rs
index 4f5a3ff5f..765384530 100644
--- a/crates/common/src/scripts/plugins/bayes.rs
+++ b/crates/common/src/scripts/plugins/bayes.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use nlp::{
     bayes::{
diff --git a/crates/common/src/scripts/plugins/dns.rs b/crates/common/src/scripts/plugins/dns.rs
index e3c06e80b..1ee5d1ff3 100644
--- a/crates/common/src/scripts/plugins/dns.rs
+++ b/crates/common/src/scripts/plugins/dns.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::net::IpAddr;
 
diff --git a/crates/common/src/scripts/plugins/exec.rs b/crates/common/src/scripts/plugins/exec.rs
index 2e35484a2..b4aabebb5 100644
--- a/crates/common/src/scripts/plugins/exec.rs
+++ b/crates/common/src/scripts/plugins/exec.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::process::Command;
 
diff --git a/crates/common/src/scripts/plugins/headers.rs b/crates/common/src/scripts/plugins/headers.rs
index fb1594a31..bc92ed993 100644
--- a/crates/common/src/scripts/plugins/headers.rs
+++ b/crates/common/src/scripts/plugins/headers.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use sieve::{runtime::Variable, FunctionMap};
 
diff --git a/crates/common/src/scripts/plugins/http.rs b/crates/common/src/scripts/plugins/http.rs
index 4161500ce..6beaacdd1 100644
--- a/crates/common/src/scripts/plugins/http.rs
+++ b/crates/common/src/scripts/plugins/http.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/common/src/scripts/plugins/lookup.rs b/crates/common/src/scripts/plugins/lookup.rs
index 9523baa28..009b68830 100644
--- a/crates/common/src/scripts/plugins/lookup.rs
+++ b/crates/common/src/scripts/plugins/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::HashSet,
diff --git a/crates/common/src/scripts/plugins/mod.rs b/crates/common/src/scripts/plugins/mod.rs
index 1f7af5119..c679bec50 100644
--- a/crates/common/src/scripts/plugins/mod.rs
+++ b/crates/common/src/scripts/plugins/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod bayes;
 pub mod dns;
diff --git a/crates/common/src/scripts/plugins/pyzor.rs b/crates/common/src/scripts/plugins/pyzor.rs
index 80fe04127..cfe835e4b 100644
--- a/crates/common/src/scripts/plugins/pyzor.rs
+++ b/crates/common/src/scripts/plugins/pyzor.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use sieve::{runtime::Variable, FunctionMap};
 
diff --git a/crates/common/src/scripts/plugins/query.rs b/crates/common/src/scripts/plugins/query.rs
index b35229174..221629b78 100644
--- a/crates/common/src/scripts/plugins/query.rs
+++ b/crates/common/src/scripts/plugins/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level store of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::cmp::Ordering;
 
diff --git a/crates/common/src/scripts/plugins/text.rs b/crates/common/src/scripts/plugins/text.rs
index 8426c7a14..596e988b5 100644
--- a/crates/common/src/scripts/plugins/text.rs
+++ b/crates/common/src/scripts/plugins/text.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level store of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use nlp::tokenizers::types::{TokenType, TypesTokenizer};
 use sieve::{runtime::Variable, FunctionMap};
diff --git a/crates/common/src/webhooks/collector.rs b/crates/common/src/webhooks/collector.rs
index 916db1218..889da8add 100644
--- a/crates/common/src/webhooks/collector.rs
+++ b/crates/common/src/webhooks/collector.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/common/src/webhooks/manager.rs b/crates/common/src/webhooks/manager.rs
index 063c79fc4..756474eaf 100644
--- a/crates/common/src/webhooks/manager.rs
+++ b/crates/common/src/webhooks/manager.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     sync::Arc,
diff --git a/crates/common/src/webhooks/mod.rs b/crates/common/src/webhooks/mod.rs
index 77fe8cec2..9c5944c76 100644
--- a/crates/common/src/webhooks/mod.rs
+++ b/crates/common/src/webhooks/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{net::IpAddr, sync::Arc, time::Duration};
 
diff --git a/crates/directory/src/backend/imap/client.rs b/crates/directory/src/backend/imap/client.rs
index 0ff983693..f37384899 100644
--- a/crates/directory/src/backend/imap/client.rs
+++ b/crates/directory/src/backend/imap/client.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mail_send::Credentials;
 use smtp_proto::{
diff --git a/crates/directory/src/backend/imap/config.rs b/crates/directory/src/backend/imap/config.rs
index 4a88f9dee..96827ea6b 100644
--- a/crates/directory/src/backend/imap/config.rs
+++ b/crates/directory/src/backend/imap/config.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/directory/src/backend/imap/lookup.rs b/crates/directory/src/backend/imap/lookup.rs
index d82ec9141..e900df2d3 100644
--- a/crates/directory/src/backend/imap/lookup.rs
+++ b/crates/directory/src/backend/imap/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mail_send::Credentials;
 use smtp_proto::{AUTH_CRAM_MD5, AUTH_LOGIN, AUTH_OAUTHBEARER, AUTH_PLAIN, AUTH_XOAUTH2};
diff --git a/crates/directory/src/backend/imap/mod.rs b/crates/directory/src/backend/imap/mod.rs
index 7556bab71..9fdf61e58 100644
--- a/crates/directory/src/backend/imap/mod.rs
+++ b/crates/directory/src/backend/imap/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod client;
 pub mod config;
diff --git a/crates/directory/src/backend/imap/pool.rs b/crates/directory/src/backend/imap/pool.rs
index deb60fc2e..927da682c 100644
--- a/crates/directory/src/backend/imap/pool.rs
+++ b/crates/directory/src/backend/imap/pool.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::atomic::Ordering;
 
diff --git a/crates/directory/src/backend/imap/tls.rs b/crates/directory/src/backend/imap/tls.rs
index cba300d45..f2d0b4272 100644
--- a/crates/directory/src/backend/imap/tls.rs
+++ b/crates/directory/src/backend/imap/tls.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/directory/src/backend/internal/lookup.rs b/crates/directory/src/backend/internal/lookup.rs
index 726213319..defdc30ee 100644
--- a/crates/directory/src/backend/internal/lookup.rs
+++ b/crates/directory/src/backend/internal/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mail_send::Credentials;
 use store::{
diff --git a/crates/directory/src/backend/internal/manage.rs b/crates/directory/src/backend/internal/manage.rs
index 160d91e18..9588c91ef 100644
--- a/crates/directory/src/backend/internal/manage.rs
+++ b/crates/directory/src/backend/internal/manage.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::types::collection::Collection;
 use store::{
diff --git a/crates/directory/src/backend/internal/mod.rs b/crates/directory/src/backend/internal/mod.rs
index 2fed4d33a..b708a1b55 100644
--- a/crates/directory/src/backend/internal/mod.rs
+++ b/crates/directory/src/backend/internal/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod lookup;
 pub mod manage;
diff --git a/crates/directory/src/backend/ldap/config.rs b/crates/directory/src/backend/ldap/config.rs
index f27deb79d..8381856cf 100644
--- a/crates/directory/src/backend/ldap/config.rs
+++ b/crates/directory/src/backend/ldap/config.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/directory/src/backend/ldap/lookup.rs b/crates/directory/src/backend/ldap/lookup.rs
index 957b418ca..d46ff6316 100644
--- a/crates/directory/src/backend/ldap/lookup.rs
+++ b/crates/directory/src/backend/ldap/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ldap3::{Ldap, LdapConnAsync, LdapError, Scope, SearchEntry};
 use mail_send::Credentials;
diff --git a/crates/directory/src/backend/ldap/mod.rs b/crates/directory/src/backend/ldap/mod.rs
index 5a2be0f35..1ab52826c 100644
--- a/crates/directory/src/backend/ldap/mod.rs
+++ b/crates/directory/src/backend/ldap/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use deadpool::managed::Pool;
 use ldap3::{ldap_escape, LdapConnSettings};
diff --git a/crates/directory/src/backend/ldap/pool.rs b/crates/directory/src/backend/ldap/pool.rs
index 4cc529782..7e55fa403 100644
--- a/crates/directory/src/backend/ldap/pool.rs
+++ b/crates/directory/src/backend/ldap/pool.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use async_trait::async_trait;
 use deadpool::managed;
diff --git a/crates/directory/src/backend/memory/config.rs b/crates/directory/src/backend/memory/config.rs
index 44e2a64e3..d3df6d86f 100644
--- a/crates/directory/src/backend/memory/config.rs
+++ b/crates/directory/src/backend/memory/config.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use store::Store;
 use utils::config::{utils::AsKey, Config};
diff --git a/crates/directory/src/backend/memory/lookup.rs b/crates/directory/src/backend/memory/lookup.rs
index eb2bd3989..6109bacdd 100644
--- a/crates/directory/src/backend/memory/lookup.rs
+++ b/crates/directory/src/backend/memory/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mail_send::Credentials;
 
diff --git a/crates/directory/src/backend/memory/mod.rs b/crates/directory/src/backend/memory/mod.rs
index 97e8ceff9..fde9160bd 100644
--- a/crates/directory/src/backend/memory/mod.rs
+++ b/crates/directory/src/backend/memory/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::{AHashMap, AHashSet};
 use store::Store;
diff --git a/crates/directory/src/backend/mod.rs b/crates/directory/src/backend/mod.rs
index f0388b1b2..7355355f8 100644
--- a/crates/directory/src/backend/mod.rs
+++ b/crates/directory/src/backend/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod imap;
 pub mod internal;
diff --git a/crates/directory/src/backend/smtp/config.rs b/crates/directory/src/backend/smtp/config.rs
index 480726281..d5248f765 100644
--- a/crates/directory/src/backend/smtp/config.rs
+++ b/crates/directory/src/backend/smtp/config.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/directory/src/backend/smtp/lookup.rs b/crates/directory/src/backend/smtp/lookup.rs
index a6c25e178..e1a156634 100644
--- a/crates/directory/src/backend/smtp/lookup.rs
+++ b/crates/directory/src/backend/smtp/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mail_send::{smtp::AssertReply, Credentials};
 use smtp_proto::Severity;
diff --git a/crates/directory/src/backend/smtp/mod.rs b/crates/directory/src/backend/smtp/mod.rs
index 2e10833e9..7d37527ac 100644
--- a/crates/directory/src/backend/smtp/mod.rs
+++ b/crates/directory/src/backend/smtp/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod config;
 pub mod lookup;
diff --git a/crates/directory/src/backend/smtp/pool.rs b/crates/directory/src/backend/smtp/pool.rs
index 34ef0ddb7..c2bdf5a7a 100644
--- a/crates/directory/src/backend/smtp/pool.rs
+++ b/crates/directory/src/backend/smtp/pool.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use async_trait::async_trait;
 use deadpool::managed;
diff --git a/crates/directory/src/backend/sql/config.rs b/crates/directory/src/backend/sql/config.rs
index d22737667..a8295fe3b 100644
--- a/crates/directory/src/backend/sql/config.rs
+++ b/crates/directory/src/backend/sql/config.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use store::{Store, Stores};
 use utils::config::{utils::AsKey, Config};
diff --git a/crates/directory/src/backend/sql/lookup.rs b/crates/directory/src/backend/sql/lookup.rs
index 4a96f543e..bb0e6f035 100644
--- a/crates/directory/src/backend/sql/lookup.rs
+++ b/crates/directory/src/backend/sql/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mail_send::Credentials;
 use store::{NamedRows, Rows, Value};
diff --git a/crates/directory/src/backend/sql/mod.rs b/crates/directory/src/backend/sql/mod.rs
index d3f169f5f..1faf3c7e2 100644
--- a/crates/directory/src/backend/sql/mod.rs
+++ b/crates/directory/src/backend/sql/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use store::{LookupStore, Store};
 
diff --git a/crates/directory/src/core/cache.rs b/crates/directory/src/core/cache.rs
index fc1c218b8..2e4219cbf 100644
--- a/crates/directory/src/core/cache.rs
+++ b/crates/directory/src/core/cache.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     borrow::Borrow,
diff --git a/crates/directory/src/core/config.rs b/crates/directory/src/core/config.rs
index 6e579d340..a73698cd5 100644
--- a/crates/directory/src/core/config.rs
+++ b/crates/directory/src/core/config.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use deadpool::{
     managed::{Manager, Pool},
diff --git a/crates/directory/src/core/dispatch.rs b/crates/directory/src/core/dispatch.rs
index d54782150..cb8d65ce7 100644
--- a/crates/directory/src/core/dispatch.rs
+++ b/crates/directory/src/core/dispatch.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     backend::internal::lookup::DirectoryStore, Directory, DirectoryInner, Principal, QueryBy,
diff --git a/crates/directory/src/core/mod.rs b/crates/directory/src/core/mod.rs
index 683aa9785..ae094f1ef 100644
--- a/crates/directory/src/core/mod.rs
+++ b/crates/directory/src/core/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod cache;
 pub mod config;
diff --git a/crates/directory/src/core/secret.rs b/crates/directory/src/core/secret.rs
index 05bf27c63..ef0176203 100644
--- a/crates/directory/src/core/secret.rs
+++ b/crates/directory/src/core/secret.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use argon2::Argon2;
 use mail_builder::encoders::base64::base64_encode;
diff --git a/crates/directory/src/lib.rs b/crates/directory/src/lib.rs
index b59e14729..60c803589 100644
--- a/crates/directory/src/lib.rs
+++ b/crates/directory/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use core::cache::CachedDirectory;
 use std::{
diff --git a/crates/enterprise/Cargo.toml b/crates/enterprise/Cargo.toml
new file mode 100644
index 000000000..5aa0dd836
--- /dev/null
+++ b/crates/enterprise/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "enterprise"
+version = "0.8.2"
+edition = "2021"
+license = "LicenseRef-SEL"
+resolver = "2"
+
+[dependencies]
+base64 = "0.22.1"
+ring = "0.17.8"
+
+[features]
+test_mode = []
diff --git a/crates/enterprise/src/lib.rs b/crates/enterprise/src/lib.rs
new file mode 100644
index 000000000..c1c8295ed
--- /dev/null
+++ b/crates/enterprise/src/lib.rs
@@ -0,0 +1,7 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: LicenseRef-SCL
+ */
+
+pub mod license;
diff --git a/crates/enterprise/src/license.rs b/crates/enterprise/src/license.rs
new file mode 100644
index 000000000..1a98d3f7e
--- /dev/null
+++ b/crates/enterprise/src/license.rs
@@ -0,0 +1,166 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: LicenseRef-SCL
+ */
+
+use std::time::SystemTime;
+
+use ring::signature::{Ed25519KeyPair, UnparsedPublicKey, ED25519};
+
+use base64::{engine::general_purpose::STANDARD, Engine};
+
+pub struct LicenseValidator {
+    pub public_key: UnparsedPublicKey<Vec<u8>>,
+}
+
+pub struct LicenseGenerator {
+    key_pair: Ed25519KeyPair,
+}
+
+#[derive(Debug)]
+pub struct LicenseKey {
+    pub valid_to: u64,
+    pub valid_from: u64,
+    pub domain: String,
+    pub accounts: u32,
+}
+
+#[derive(Debug)]
+pub enum LicenseError {
+    Expired,
+    Parse,
+    Validation,
+    Decode,
+    Invalid,
+}
+
+const U64_LEN: usize = std::mem::size_of::<u64>();
+const U32_LEN: usize = std::mem::size_of::<u32>();
+
+impl LicenseValidator {
+    #[allow(clippy::new_without_default)]
+    pub fn new() -> Self {
+        LicenseValidator {
+            public_key: UnparsedPublicKey::new(
+                &ED25519,
+                vec![
+                    118, 10, 182, 35, 89, 111, 11, 60, 154, 47, 205, 127, 107, 229, 55, 104, 72,
+                    54, 141, 14, 97, 219, 2, 4, 119, 143, 156, 10, 152, 216, 32, 194,
+                ],
+            ),
+        }
+    }
+
+    pub fn validate(&self, key: impl AsRef<str>) -> Result<LicenseKey, LicenseError> {
+        let key = STANDARD
+            .decode(key.as_ref())
+            .map_err(|_| LicenseError::Decode)?;
+        let valid_from = u64::from_le_bytes(
+            key.get(..U64_LEN)
+                .ok_or(LicenseError::Parse)?
+                .try_into()
+                .unwrap(),
+        );
+        let valid_to = u64::from_le_bytes(
+            key.get(U64_LEN..(U64_LEN * 2))
+                .ok_or(LicenseError::Parse)?
+                .try_into()
+                .unwrap(),
+        );
+        let accounts = u32::from_le_bytes(
+            key.get((U64_LEN * 2)..(U64_LEN * 2) + U32_LEN)
+                .ok_or(LicenseError::Parse)?
+                .try_into()
+                .unwrap(),
+        );
+        let domain_len = u32::from_le_bytes(
+            key.get((U64_LEN * 2) + U32_LEN..(U64_LEN * 2) + (U32_LEN * 2))
+                .ok_or(LicenseError::Parse)?
+                .try_into()
+                .unwrap(),
+        ) as usize;
+        let domain = String::from_utf8(
+            key.get((U64_LEN * 2) + (U32_LEN * 2)..(U64_LEN * 2) + (U32_LEN * 2) + domain_len)
+                .ok_or(LicenseError::Parse)?
+                .to_vec(),
+        )
+        .map_err(|_| LicenseError::Parse)?;
+        let signature = key
+            .get((U64_LEN * 2) + (U32_LEN * 2) + domain_len..)
+            .ok_or(LicenseError::Parse)?;
+
+        if valid_from == 0
+            || valid_to == 0
+            || valid_from >= valid_to
+            || accounts == 0
+            || domain.is_empty()
+        {
+            return Err(LicenseError::Invalid);
+        }
+
+        // Validate signature
+        self.public_key
+            .verify(
+                &key[..(U64_LEN * 2) + (U32_LEN * 2) + domain_len],
+                signature,
+            )
+            .map_err(|_| LicenseError::Validation)?;
+
+        let key = LicenseKey {
+            valid_from,
+            valid_to,
+            domain,
+            accounts,
+        };
+
+        if !key.is_expired() {
+            Ok(key)
+        } else {
+            Err(LicenseError::Expired)
+        }
+    }
+}
+
+impl LicenseKey {
+    pub fn new(domain: String, accounts: u32, expires_in: u64) -> Self {
+        let now = SystemTime::UNIX_EPOCH
+            .elapsed()
+            .unwrap_or_default()
+            .as_secs();
+        LicenseKey {
+            valid_from: now - 300,
+            valid_to: now + expires_in + 300,
+            domain,
+            accounts,
+        }
+    }
+
+    pub fn is_expired(&self) -> bool {
+        let now = SystemTime::UNIX_EPOCH
+            .elapsed()
+            .unwrap_or_default()
+            .as_secs();
+
+        now >= self.valid_to || now < self.valid_from
+    }
+}
+
+impl LicenseGenerator {
+    pub fn new(pkcs8_der: impl AsRef<[u8]>) -> Self {
+        Self {
+            key_pair: Ed25519KeyPair::from_pkcs8(pkcs8_der.as_ref()).unwrap(),
+        }
+    }
+
+    pub fn generate(&self, key: LicenseKey) -> String {
+        let mut bytes = Vec::new();
+        bytes.extend_from_slice(&key.valid_from.to_le_bytes());
+        bytes.extend_from_slice(&key.valid_to.to_le_bytes());
+        bytes.extend_from_slice(&key.accounts.to_le_bytes());
+        bytes.extend_from_slice(&(key.domain.len() as u32).to_le_bytes());
+        bytes.extend_from_slice(key.domain.as_bytes());
+        bytes.extend_from_slice(self.key_pair.sign(&bytes).as_ref());
+        STANDARD.encode(&bytes)
+    }
+}
diff --git a/crates/imap-proto/src/lib.rs b/crates/imap-proto/src/lib.rs
index b051a42b5..10322047f 100644
--- a/crates/imap-proto/src/lib.rs
+++ b/crates/imap-proto/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/imap-proto/src/parser/acl.rs b/crates/imap-proto/src/parser/acl.rs
index 08390f4d8..4dc078cb1 100644
--- a/crates/imap-proto/src/parser/acl.rs
+++ b/crates/imap-proto/src/parser/acl.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{
diff --git a/crates/imap-proto/src/parser/append.rs b/crates/imap-proto/src/parser/append.rs
index 7ba1fc404..24f6103a0 100644
--- a/crates/imap-proto/src/parser/append.rs
+++ b/crates/imap-proto/src/parser/append.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{
diff --git a/crates/imap-proto/src/parser/authenticate.rs b/crates/imap-proto/src/parser/authenticate.rs
index da5429102..3cd61ba84 100644
--- a/crates/imap-proto/src/parser/authenticate.rs
+++ b/crates/imap-proto/src/parser/authenticate.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::authenticate::{self, Mechanism},
diff --git a/crates/imap-proto/src/parser/copy_move.rs b/crates/imap-proto/src/parser/copy_move.rs
index 46fb25621..f21fe628a 100644
--- a/crates/imap-proto/src/parser/copy_move.rs
+++ b/crates/imap-proto/src/parser/copy_move.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{copy_move, ProtocolVersion},
diff --git a/crates/imap-proto/src/parser/create.rs b/crates/imap-proto/src/parser/create.rs
index 19f46a884..0885b97c5 100644
--- a/crates/imap-proto/src/parser/create.rs
+++ b/crates/imap-proto/src/parser/create.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{create, ProtocolVersion},
diff --git a/crates/imap-proto/src/parser/delete.rs b/crates/imap-proto/src/parser/delete.rs
index ac5f3d722..ad01f8340 100644
--- a/crates/imap-proto/src/parser/delete.rs
+++ b/crates/imap-proto/src/parser/delete.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{delete, ProtocolVersion},
diff --git a/crates/imap-proto/src/parser/enable.rs b/crates/imap-proto/src/parser/enable.rs
index 56dd2ff2b..30f8c1bec 100644
--- a/crates/imap-proto/src/parser/enable.rs
+++ b/crates/imap-proto/src/parser/enable.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{capability::Capability, enable},
diff --git a/crates/imap-proto/src/parser/fetch.rs b/crates/imap-proto/src/parser/fetch.rs
index 2e43be160..5062a4b31 100644
--- a/crates/imap-proto/src/parser/fetch.rs
+++ b/crates/imap-proto/src/parser/fetch.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 use std::iter::Peekable;
diff --git a/crates/imap-proto/src/parser/list.rs b/crates/imap-proto/src/parser/list.rs
index 49425c653..87150984c 100644
--- a/crates/imap-proto/src/parser/list.rs
+++ b/crates/imap-proto/src/parser/list.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{
diff --git a/crates/imap-proto/src/parser/login.rs b/crates/imap-proto/src/parser/login.rs
index 152d66f38..691ca2062 100644
--- a/crates/imap-proto/src/parser/login.rs
+++ b/crates/imap-proto/src/parser/login.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{protocol::login, receiver::Request, Command};
 
diff --git a/crates/imap-proto/src/parser/lsub.rs b/crates/imap-proto/src/parser/lsub.rs
index 2b0545856..e9b86e3da 100644
--- a/crates/imap-proto/src/parser/lsub.rs
+++ b/crates/imap-proto/src/parser/lsub.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{
diff --git a/crates/imap-proto/src/parser/mod.rs b/crates/imap-proto/src/parser/mod.rs
index 61bf00f54..5272e6f02 100644
--- a/crates/imap-proto/src/parser/mod.rs
+++ b/crates/imap-proto/src/parser/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod acl;
 pub mod append;
diff --git a/crates/imap-proto/src/parser/rename.rs b/crates/imap-proto/src/parser/rename.rs
index 75992a828..1dd364b4c 100644
--- a/crates/imap-proto/src/parser/rename.rs
+++ b/crates/imap-proto/src/parser/rename.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{rename, ProtocolVersion},
diff --git a/crates/imap-proto/src/parser/search.rs b/crates/imap-proto/src/parser/search.rs
index 876515548..5e6f00404 100644
--- a/crates/imap-proto/src/parser/search.rs
+++ b/crates/imap-proto/src/parser/search.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 use std::iter::Peekable;
diff --git a/crates/imap-proto/src/parser/select.rs b/crates/imap-proto/src/parser/select.rs
index c5f4a8b1d..57c714e80 100644
--- a/crates/imap-proto/src/parser/select.rs
+++ b/crates/imap-proto/src/parser/select.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{
diff --git a/crates/imap-proto/src/parser/sort.rs b/crates/imap-proto/src/parser/sort.rs
index 67da64740..382a24ef0 100644
--- a/crates/imap-proto/src/parser/sort.rs
+++ b/crates/imap-proto/src/parser/sort.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mail_parser::decoders::charsets::map::charset_decoder;
 
diff --git a/crates/imap-proto/src/parser/status.rs b/crates/imap-proto/src/parser/status.rs
index b5b7faac9..41acb9edc 100644
--- a/crates/imap-proto/src/parser/status.rs
+++ b/crates/imap-proto/src/parser/status.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::protocol::status::Status;
 use crate::protocol::{status, ProtocolVersion};
diff --git a/crates/imap-proto/src/parser/store.rs b/crates/imap-proto/src/parser/store.rs
index 968953f0f..9a4f39a9f 100644
--- a/crates/imap-proto/src/parser/store.rs
+++ b/crates/imap-proto/src/parser/store.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/imap-proto/src/parser/subscribe.rs b/crates/imap-proto/src/parser/subscribe.rs
index 5a494b490..e3a93777f 100644
--- a/crates/imap-proto/src/parser/subscribe.rs
+++ b/crates/imap-proto/src/parser/subscribe.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     protocol::{subscribe, ProtocolVersion},
diff --git a/crates/imap-proto/src/parser/thread.rs b/crates/imap-proto/src/parser/thread.rs
index b90083ea5..9a8b95487 100644
--- a/crates/imap-proto/src/parser/thread.rs
+++ b/crates/imap-proto/src/parser/thread.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mail_parser::decoders::charsets::map::charset_decoder;
 
diff --git a/crates/imap-proto/src/protocol/acl.rs b/crates/imap-proto/src/protocol/acl.rs
index d75cf8f46..2fbff2a3e 100644
--- a/crates/imap-proto/src/protocol/acl.rs
+++ b/crates/imap-proto/src/protocol/acl.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 /*
 
diff --git a/crates/imap-proto/src/protocol/append.rs b/crates/imap-proto/src/protocol/append.rs
index 62db29534..24f13bdf5 100644
--- a/crates/imap-proto/src/protocol/append.rs
+++ b/crates/imap-proto/src/protocol/append.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::Flag;
 
diff --git a/crates/imap-proto/src/protocol/authenticate.rs b/crates/imap-proto/src/protocol/authenticate.rs
index 9eab8178f..8be74653c 100644
--- a/crates/imap-proto/src/protocol/authenticate.rs
+++ b/crates/imap-proto/src/protocol/authenticate.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Arguments {
diff --git a/crates/imap-proto/src/protocol/capability.rs b/crates/imap-proto/src/protocol/capability.rs
index ef2cb297f..c73be6834 100644
--- a/crates/imap-proto/src/protocol/capability.rs
+++ b/crates/imap-proto/src/protocol/capability.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::{authenticate::Mechanism, ImapResponse};
 
diff --git a/crates/imap-proto/src/protocol/copy_move.rs b/crates/imap-proto/src/protocol/copy_move.rs
index d2f718d48..669af0ac5 100644
--- a/crates/imap-proto/src/protocol/copy_move.rs
+++ b/crates/imap-proto/src/protocol/copy_move.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::Sequence;
 
diff --git a/crates/imap-proto/src/protocol/create.rs b/crates/imap-proto/src/protocol/create.rs
index ea9cc4f17..dad0ce97e 100644
--- a/crates/imap-proto/src/protocol/create.rs
+++ b/crates/imap-proto/src/protocol/create.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Arguments {
diff --git a/crates/imap-proto/src/protocol/delete.rs b/crates/imap-proto/src/protocol/delete.rs
index 5e14eb15f..8cbd6e327 100644
--- a/crates/imap-proto/src/protocol/delete.rs
+++ b/crates/imap-proto/src/protocol/delete.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Arguments {
diff --git a/crates/imap-proto/src/protocol/enable.rs b/crates/imap-proto/src/protocol/enable.rs
index 990639e45..b6f79fc15 100644
--- a/crates/imap-proto/src/protocol/enable.rs
+++ b/crates/imap-proto/src/protocol/enable.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::{capability::Capability, ImapResponse};
 
diff --git a/crates/imap-proto/src/protocol/expunge.rs b/crates/imap-proto/src/protocol/expunge.rs
index 6f60b149f..301f1c45c 100644
--- a/crates/imap-proto/src/protocol/expunge.rs
+++ b/crates/imap-proto/src/protocol/expunge.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::{serialize_sequence, ImapResponse};
 
diff --git a/crates/imap-proto/src/protocol/fetch.rs b/crates/imap-proto/src/protocol/fetch.rs
index 61f2930d3..e8b397a8d 100644
--- a/crates/imap-proto/src/protocol/fetch.rs
+++ b/crates/imap-proto/src/protocol/fetch.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/imap-proto/src/protocol/list.rs b/crates/imap-proto/src/protocol/list.rs
index b04d073fd..8bfe7e88f 100644
--- a/crates/imap-proto/src/protocol/list.rs
+++ b/crates/imap-proto/src/protocol/list.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::utf7::utf7_encode;
 
diff --git a/crates/imap-proto/src/protocol/login.rs b/crates/imap-proto/src/protocol/login.rs
index e323a1509..84c92c1a1 100644
--- a/crates/imap-proto/src/protocol/login.rs
+++ b/crates/imap-proto/src/protocol/login.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Arguments {
diff --git a/crates/imap-proto/src/protocol/mod.rs b/crates/imap-proto/src/protocol/mod.rs
index da498ac67..ee29d065e 100644
--- a/crates/imap-proto/src/protocol/mod.rs
+++ b/crates/imap-proto/src/protocol/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{cmp::Ordering, fmt::Display};
 
diff --git a/crates/imap-proto/src/protocol/namespace.rs b/crates/imap-proto/src/protocol/namespace.rs
index b51383837..b05024128 100644
--- a/crates/imap-proto/src/protocol/namespace.rs
+++ b/crates/imap-proto/src/protocol/namespace.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::{quoted_string, ImapResponse};
 
diff --git a/crates/imap-proto/src/protocol/rename.rs b/crates/imap-proto/src/protocol/rename.rs
index bd89917d7..26e139ea3 100644
--- a/crates/imap-proto/src/protocol/rename.rs
+++ b/crates/imap-proto/src/protocol/rename.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Arguments {
diff --git a/crates/imap-proto/src/protocol/search.rs b/crates/imap-proto/src/protocol/search.rs
index 01d5b57ac..2a2b00260 100644
--- a/crates/imap-proto/src/protocol/search.rs
+++ b/crates/imap-proto/src/protocol/search.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use store::fts::{FilterItem, FilterType};
 
diff --git a/crates/imap-proto/src/protocol/select.rs b/crates/imap-proto/src/protocol/select.rs
index 3da1c859f..90b9c35af 100644
--- a/crates/imap-proto/src/protocol/select.rs
+++ b/crates/imap-proto/src/protocol/select.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{ResponseCode, StatusResponse};
 
diff --git a/crates/imap-proto/src/protocol/status.rs b/crates/imap-proto/src/protocol/status.rs
index c78a143e9..6d0f204cc 100644
--- a/crates/imap-proto/src/protocol/status.rs
+++ b/crates/imap-proto/src/protocol/status.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::utf7::utf7_encode;
 
diff --git a/crates/imap-proto/src/protocol/store.rs b/crates/imap-proto/src/protocol/store.rs
index aab5fbe80..0371f81c2 100644
--- a/crates/imap-proto/src/protocol/store.rs
+++ b/crates/imap-proto/src/protocol/store.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::{fetch::FetchItem, Flag, ImapResponse, Sequence};
 
diff --git a/crates/imap-proto/src/protocol/subscribe.rs b/crates/imap-proto/src/protocol/subscribe.rs
index 5e14eb15f..8cbd6e327 100644
--- a/crates/imap-proto/src/protocol/subscribe.rs
+++ b/crates/imap-proto/src/protocol/subscribe.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Arguments {
diff --git a/crates/imap-proto/src/protocol/thread.rs b/crates/imap-proto/src/protocol/thread.rs
index 9c5a958c1..d78228585 100644
--- a/crates/imap-proto/src/protocol/thread.rs
+++ b/crates/imap-proto/src/protocol/thread.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::{search::Filter, ImapResponse};
 
diff --git a/crates/imap-proto/src/receiver.rs b/crates/imap-proto/src/receiver.rs
index 434c9d57e..6115a52dc 100644
--- a/crates/imap-proto/src/receiver.rs
+++ b/crates/imap-proto/src/receiver.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, fmt::Display};
 
diff --git a/crates/imap-proto/src/utf7.rs b/crates/imap-proto/src/utf7.rs
index 8c8373612..0524e7f5c 100644
--- a/crates/imap-proto/src/utf7.rs
+++ b/crates/imap-proto/src/utf7.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 // Ported from https://github.com/jstedfast/MailKit/blob/master/MailKit/Net/Imap/ImapEncoding.cs
 // Author: Jeffrey Stedfast <jestedfa@microsoft.com>
diff --git a/crates/imap/src/core/client.rs b/crates/imap/src/core/client.rs
index ccf9ca612..1e2f022e0 100644
--- a/crates/imap/src/core/client.rs
+++ b/crates/imap/src/core/client.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{iter::Peekable, sync::Arc, vec::IntoIter};
 
diff --git a/crates/imap/src/core/message.rs b/crates/imap/src/core/message.rs
index 2687884d7..a98823d10 100644
--- a/crates/imap/src/core/message.rs
+++ b/crates/imap/src/core/message.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{collections::BTreeMap, sync::Arc};
 
diff --git a/crates/imap/src/core/mod.rs b/crates/imap/src/core/mod.rs
index 6fc5248d2..29f26f637 100644
--- a/crates/imap/src/core/mod.rs
+++ b/crates/imap/src/core/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::BTreeMap,
diff --git a/crates/imap/src/core/session.rs b/crates/imap/src/core/session.rs
index 783dce9eb..dc348a2bf 100644
--- a/crates/imap/src/core/session.rs
+++ b/crates/imap/src/core/session.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/imap/src/core/writer.rs b/crates/imap/src/core/writer.rs
index eeb7f308d..29483fe5a 100644
--- a/crates/imap/src/core/writer.rs
+++ b/crates/imap/src/core/writer.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/imap/src/lib.rs b/crates/imap/src/lib.rs
index bad28308d..4f14f2a51 100644
--- a/crates/imap/src/lib.rs
+++ b/crates/imap/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use core::{ImapInstance, Inner, IMAP};
 use std::{collections::hash_map::RandomState, sync::Arc};
diff --git a/crates/imap/src/op/acl.rs b/crates/imap/src/op/acl.rs
index 13ea71fc8..5e2105135 100644
--- a/crates/imap/src/op/acl.rs
+++ b/crates/imap/src/op/acl.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/imap/src/op/append.rs b/crates/imap/src/op/append.rs
index ccfaee1e2..55333a06a 100644
--- a/crates/imap/src/op/append.rs
+++ b/crates/imap/src/op/append.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/imap/src/op/authenticate.rs b/crates/imap/src/op/authenticate.rs
index a300dac24..cafcc6152 100644
--- a/crates/imap/src/op/authenticate.rs
+++ b/crates/imap/src/op/authenticate.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{config::server::ServerProtocol, listener::SessionStream, AuthResult};
 use imap_proto::{
diff --git a/crates/imap/src/op/capability.rs b/crates/imap/src/op/capability.rs
index 034d40119..6445c54c1 100644
--- a/crates/imap/src/op/capability.rs
+++ b/crates/imap/src/op/capability.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::Session;
 use common::listener::SessionStream;
diff --git a/crates/imap/src/op/close.rs b/crates/imap/src/op/close.rs
index e62a850de..c858f0b3f 100644
--- a/crates/imap/src/op/close.rs
+++ b/crates/imap/src/op/close.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::{Session, State};
 use common::listener::SessionStream;
diff --git a/crates/imap/src/op/copy_move.rs b/crates/imap/src/op/copy_move.rs
index cb3d1fac1..6cffde992 100644
--- a/crates/imap/src/op/copy_move.rs
+++ b/crates/imap/src/op/copy_move.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/imap/src/op/create.rs b/crates/imap/src/op/create.rs
index f85452827..e7e4f5526 100644
--- a/crates/imap/src/op/create.rs
+++ b/crates/imap/src/op/create.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::{Account, Mailbox, Session, SessionData};
 use common::listener::SessionStream;
diff --git a/crates/imap/src/op/delete.rs b/crates/imap/src/op/delete.rs
index 01b90377d..508bf22bd 100644
--- a/crates/imap/src/op/delete.rs
+++ b/crates/imap/src/op/delete.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::{Session, SessionData};
 use common::listener::SessionStream;
diff --git a/crates/imap/src/op/enable.rs b/crates/imap/src/op/enable.rs
index 43ba4e7ca..53169a9fb 100644
--- a/crates/imap/src/op/enable.rs
+++ b/crates/imap/src/op/enable.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::Session;
 use common::listener::SessionStream;
diff --git a/crates/imap/src/op/expunge.rs b/crates/imap/src/op/expunge.rs
index 498b59d0e..39f445c6b 100644
--- a/crates/imap/src/op/expunge.rs
+++ b/crates/imap/src/op/expunge.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/imap/src/op/fetch.rs b/crates/imap/src/op/fetch.rs
index ccf3d47ca..2aef9b31f 100644
--- a/crates/imap/src/op/fetch.rs
+++ b/crates/imap/src/op/fetch.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, sync::Arc};
 
diff --git a/crates/imap/src/op/idle.rs b/crates/imap/src/op/idle.rs
index 80c46a585..0552dc271 100644
--- a/crates/imap/src/op/idle.rs
+++ b/crates/imap/src/op/idle.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/imap/src/op/list.rs b/crates/imap/src/op/list.rs
index 7de2d1409..afea98e48 100644
--- a/crates/imap/src/op/list.rs
+++ b/crates/imap/src/op/list.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::{Session, SessionData};
 use common::listener::SessionStream;
diff --git a/crates/imap/src/op/login.rs b/crates/imap/src/op/login.rs
index 6c32939ae..4bf621271 100644
--- a/crates/imap/src/op/login.rs
+++ b/crates/imap/src/op/login.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::{receiver::Request, Command};
 
diff --git a/crates/imap/src/op/logout.rs b/crates/imap/src/op/logout.rs
index 9af4663cc..afc797129 100644
--- a/crates/imap/src/op/logout.rs
+++ b/crates/imap/src/op/logout.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::Session;
 use common::listener::SessionStream;
diff --git a/crates/imap/src/op/mod.rs b/crates/imap/src/op/mod.rs
index e4017eb1a..5070a4788 100644
--- a/crates/imap/src/op/mod.rs
+++ b/crates/imap/src/op/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ::store::query::log::Query;
 use imap_proto::StatusResponse;
diff --git a/crates/imap/src/op/namespace.rs b/crates/imap/src/op/namespace.rs
index 56bbba38c..63268ef0d 100644
--- a/crates/imap/src/op/namespace.rs
+++ b/crates/imap/src/op/namespace.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::Session;
 use common::listener::SessionStream;
diff --git a/crates/imap/src/op/noop.rs b/crates/imap/src/op/noop.rs
index 61cf509ab..415de2325 100644
--- a/crates/imap/src/op/noop.rs
+++ b/crates/imap/src/op/noop.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::{Session, State};
 use common::listener::SessionStream;
diff --git a/crates/imap/src/op/rename.rs b/crates/imap/src/op/rename.rs
index da7d481c8..68e5a86d9 100644
--- a/crates/imap/src/op/rename.rs
+++ b/crates/imap/src/op/rename.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::collections::BTreeMap;
 
diff --git a/crates/imap/src/op/search.rs b/crates/imap/src/op/search.rs
index 8d539a7cd..14e54a9e6 100644
--- a/crates/imap/src/op/search.rs
+++ b/crates/imap/src/op/search.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/imap/src/op/select.rs b/crates/imap/src/op/select.rs
index 5e972ab0d..87d2b77bb 100644
--- a/crates/imap/src/op/select.rs
+++ b/crates/imap/src/op/select.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/imap/src/op/status.rs b/crates/imap/src/op/status.rs
index 75274bdaf..a781becab 100644
--- a/crates/imap/src/op/status.rs
+++ b/crates/imap/src/op/status.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/imap/src/op/store.rs b/crates/imap/src/op/store.rs
index eba56e0ec..56a499ec9 100644
--- a/crates/imap/src/op/store.rs
+++ b/crates/imap/src/op/store.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/imap/src/op/subscribe.rs b/crates/imap/src/op/subscribe.rs
index ccab91e2e..771abdcca 100644
--- a/crates/imap/src/op/subscribe.rs
+++ b/crates/imap/src/op/subscribe.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::{Session, SessionData};
 use common::listener::SessionStream;
diff --git a/crates/imap/src/op/thread.rs b/crates/imap/src/op/thread.rs
index dcbfb9edf..68fe4ce70 100644
--- a/crates/imap/src/op/thread.rs
+++ b/crates/imap/src/op/thread.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/jmap-proto/src/error/method.rs b/crates/jmap-proto/src/error/method.rs
index 97af70afd..14785b113 100644
--- a/crates/jmap-proto/src/error/method.rs
+++ b/crates/jmap-proto/src/error/method.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/jmap-proto/src/error/mod.rs b/crates/jmap-proto/src/error/mod.rs
index 82fd7d994..4b3034b06 100644
--- a/crates/jmap-proto/src/error/mod.rs
+++ b/crates/jmap-proto/src/error/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod method;
 pub mod request;
diff --git a/crates/jmap-proto/src/error/request.rs b/crates/jmap-proto/src/error/request.rs
index 54540acfc..82e7a1f06 100644
--- a/crates/jmap-proto/src/error/request.rs
+++ b/crates/jmap-proto/src/error/request.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, fmt::Display};
 
diff --git a/crates/jmap-proto/src/error/set.rs b/crates/jmap-proto/src/error/set.rs
index 83ee75e04..3b44f2f52 100644
--- a/crates/jmap-proto/src/error/set.rs
+++ b/crates/jmap-proto/src/error/set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/jmap-proto/src/lib.rs b/crates/jmap-proto/src/lib.rs
index 0357faed6..55ae07114 100644
--- a/crates/jmap-proto/src/lib.rs
+++ b/crates/jmap-proto/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod error;
 pub mod method;
diff --git a/crates/jmap-proto/src/method/changes.rs b/crates/jmap-proto/src/method/changes.rs
index 6cb2a1819..9993779e2 100644
--- a/crates/jmap-proto/src/method/changes.rs
+++ b/crates/jmap-proto/src/method/changes.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     error::method::MethodError,
diff --git a/crates/jmap-proto/src/method/copy.rs b/crates/jmap-proto/src/method/copy.rs
index 598383438..bd0cea633 100644
--- a/crates/jmap-proto/src/method/copy.rs
+++ b/crates/jmap-proto/src/method/copy.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use serde::Serialize;
 use utils::map::vec_map::VecMap;
diff --git a/crates/jmap-proto/src/method/get.rs b/crates/jmap-proto/src/method/get.rs
index eb3dd7eae..fa23f829e 100644
--- a/crates/jmap-proto/src/method/get.rs
+++ b/crates/jmap-proto/src/method/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     error::method::MethodError,
diff --git a/crates/jmap-proto/src/method/import.rs b/crates/jmap-proto/src/method/import.rs
index 591698c85..c13daad5f 100644
--- a/crates/jmap-proto/src/method/import.rs
+++ b/crates/jmap-proto/src/method/import.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::map::vec_map::VecMap;
 
diff --git a/crates/jmap-proto/src/method/lookup.rs b/crates/jmap-proto/src/method/lookup.rs
index 3f01e192a..7e823ee65 100644
--- a/crates/jmap-proto/src/method/lookup.rs
+++ b/crates/jmap-proto/src/method/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::map::vec_map::VecMap;
 
diff --git a/crates/jmap-proto/src/method/mod.rs b/crates/jmap-proto/src/method/mod.rs
index 26e8e2287..822db1475 100644
--- a/crates/jmap-proto/src/method/mod.rs
+++ b/crates/jmap-proto/src/method/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashMap;
 
diff --git a/crates/jmap-proto/src/method/parse.rs b/crates/jmap-proto/src/method/parse.rs
index 26a951667..ca1715fc4 100644
--- a/crates/jmap-proto/src/method/parse.rs
+++ b/crates/jmap-proto/src/method/parse.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::map::vec_map::VecMap;
 
diff --git a/crates/jmap-proto/src/method/query.rs b/crates/jmap-proto/src/method/query.rs
index d32e75f08..8f531d454 100644
--- a/crates/jmap-proto/src/method/query.rs
+++ b/crates/jmap-proto/src/method/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/jmap-proto/src/method/query_changes.rs b/crates/jmap-proto/src/method/query_changes.rs
index 2af1c470c..290321bc9 100644
--- a/crates/jmap-proto/src/method/query_changes.rs
+++ b/crates/jmap-proto/src/method/query_changes.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     error::method::MethodError,
diff --git a/crates/jmap-proto/src/method/search_snippet.rs b/crates/jmap-proto/src/method/search_snippet.rs
index 380d74662..e73cd5147 100644
--- a/crates/jmap-proto/src/method/search_snippet.rs
+++ b/crates/jmap-proto/src/method/search_snippet.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     parser::{json::Parser, Ignore, JsonObjectParser, Token},
diff --git a/crates/jmap-proto/src/method/set.rs b/crates/jmap-proto/src/method/set.rs
index 5820cd1e0..39f14e83e 100644
--- a/crates/jmap-proto/src/method/set.rs
+++ b/crates/jmap-proto/src/method/set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashMap;
 use utils::map::{bitmap::Bitmap, vec_map::VecMap};
diff --git a/crates/jmap-proto/src/method/upload.rs b/crates/jmap-proto/src/method/upload.rs
index 4c887ab82..25d037f92 100644
--- a/crates/jmap-proto/src/method/upload.rs
+++ b/crates/jmap-proto/src/method/upload.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashMap;
 use mail_parser::decoders::base64::base64_decode;
diff --git a/crates/jmap-proto/src/method/validate.rs b/crates/jmap-proto/src/method/validate.rs
index 05674b7a4..3dcbd4053 100644
--- a/crates/jmap-proto/src/method/validate.rs
+++ b/crates/jmap-proto/src/method/validate.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use serde::Serialize;
 
diff --git a/crates/jmap-proto/src/object/blob.rs b/crates/jmap-proto/src/object/blob.rs
index 75dd89ade..0a44e4bfe 100644
--- a/crates/jmap-proto/src/object/blob.rs
+++ b/crates/jmap-proto/src/object/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     parser::{json::Parser, Ignore},
diff --git a/crates/jmap-proto/src/object/email.rs b/crates/jmap-proto/src/object/email.rs
index bbbf1f278..64661b172 100644
--- a/crates/jmap-proto/src/object/email.rs
+++ b/crates/jmap-proto/src/object/email.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     parser::{json::Parser, Ignore, JsonObjectParser},
diff --git a/crates/jmap-proto/src/object/email_submission.rs b/crates/jmap-proto/src/object/email_submission.rs
index aa11ff8fa..7191a5e5a 100644
--- a/crates/jmap-proto/src/object/email_submission.rs
+++ b/crates/jmap-proto/src/object/email_submission.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::map::vec_map::VecMap;
 
diff --git a/crates/jmap-proto/src/object/index.rs b/crates/jmap-proto/src/object/index.rs
index f404f4a45..cebc60914 100644
--- a/crates/jmap-proto/src/object/index.rs
+++ b/crates/jmap-proto/src/object/index.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, collections::HashSet};
 
diff --git a/crates/jmap-proto/src/object/mailbox.rs b/crates/jmap-proto/src/object/mailbox.rs
index c8807c49b..ad3e8a4b8 100644
--- a/crates/jmap-proto/src/object/mailbox.rs
+++ b/crates/jmap-proto/src/object/mailbox.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     parser::{json::Parser, Ignore},
diff --git a/crates/jmap-proto/src/object/mod.rs b/crates/jmap-proto/src/object/mod.rs
index fae0c00be..4f333366f 100644
--- a/crates/jmap-proto/src/object/mod.rs
+++ b/crates/jmap-proto/src/object/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod blob;
 pub mod email;
diff --git a/crates/jmap-proto/src/object/sieve.rs b/crates/jmap-proto/src/object/sieve.rs
index f42052732..1f05a7f96 100644
--- a/crates/jmap-proto/src/object/sieve.rs
+++ b/crates/jmap-proto/src/object/sieve.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     parser::json::Parser,
diff --git a/crates/jmap-proto/src/parser/base32.rs b/crates/jmap-proto/src/parser/base32.rs
index 78e98f4bd..597d6448c 100644
--- a/crates/jmap-proto/src/parser/base32.rs
+++ b/crates/jmap-proto/src/parser/base32.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::codec::{base32_custom::BASE32_INVERSE, leb128::Leb128Iterator};
 
diff --git a/crates/jmap-proto/src/parser/impls.rs b/crates/jmap-proto/src/parser/impls.rs
index a793058f1..677aaf341 100644
--- a/crates/jmap-proto/src/parser/impls.rs
+++ b/crates/jmap-proto/src/parser/impls.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/jmap-proto/src/parser/json.rs b/crates/jmap-proto/src/parser/json.rs
index 3a8ed4749..ce790e6f2 100644
--- a/crates/jmap-proto/src/parser/json.rs
+++ b/crates/jmap-proto/src/parser/json.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fmt::Display, iter::Peekable, slice::Iter};
 
diff --git a/crates/jmap-proto/src/parser/mod.rs b/crates/jmap-proto/src/parser/mod.rs
index e1fbfecd6..a21133a2a 100644
--- a/crates/jmap-proto/src/parser/mod.rs
+++ b/crates/jmap-proto/src/parser/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/jmap-proto/src/request/capability.rs b/crates/jmap-proto/src/request/capability.rs
index 48bbe9cb6..7ec457efc 100644
--- a/crates/jmap-proto/src/request/capability.rs
+++ b/crates/jmap-proto/src/request/capability.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::map::vec_map::VecMap;
 
diff --git a/crates/jmap-proto/src/request/echo.rs b/crates/jmap-proto/src/request/echo.rs
index 200af56d3..b82a4d860 100644
--- a/crates/jmap-proto/src/request/echo.rs
+++ b/crates/jmap-proto/src/request/echo.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use serde_json::value::RawValue;
 use std::fmt::Write;
diff --git a/crates/jmap-proto/src/request/method.rs b/crates/jmap-proto/src/request/method.rs
index e3c670118..b9b51594d 100644
--- a/crates/jmap-proto/src/request/method.rs
+++ b/crates/jmap-proto/src/request/method.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/jmap-proto/src/request/mod.rs b/crates/jmap-proto/src/request/mod.rs
index b25b1cff3..0afa84519 100644
--- a/crates/jmap-proto/src/request/mod.rs
+++ b/crates/jmap-proto/src/request/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod capability;
 pub mod echo;
diff --git a/crates/jmap-proto/src/request/parser.rs b/crates/jmap-proto/src/request/parser.rs
index a43803e45..3f62d523f 100644
--- a/crates/jmap-proto/src/request/parser.rs
+++ b/crates/jmap-proto/src/request/parser.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::collections::HashMap;
 
diff --git a/crates/jmap-proto/src/request/reference.rs b/crates/jmap-proto/src/request/reference.rs
index 3f8560807..62ca66ba8 100644
--- a/crates/jmap-proto/src/request/reference.rs
+++ b/crates/jmap-proto/src/request/reference.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/jmap-proto/src/request/websocket.rs b/crates/jmap-proto/src/request/websocket.rs
index f5ee79d29..c2a42851c 100644
--- a/crates/jmap-proto/src/request/websocket.rs
+++ b/crates/jmap-proto/src/request/websocket.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, collections::HashMap};
 
diff --git a/crates/jmap-proto/src/response/mod.rs b/crates/jmap-proto/src/response/mod.rs
index 273cc8447..7d5b78b3f 100644
--- a/crates/jmap-proto/src/response/mod.rs
+++ b/crates/jmap-proto/src/response/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod references;
 pub mod serialize;
diff --git a/crates/jmap-proto/src/response/references.rs b/crates/jmap-proto/src/response/references.rs
index 24f6754cd..2c7aa2bde 100644
--- a/crates/jmap-proto/src/response/references.rs
+++ b/crates/jmap-proto/src/response/references.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::collections::HashMap;
 
diff --git a/crates/jmap-proto/src/response/serialize.rs b/crates/jmap-proto/src/response/serialize.rs
index 6baa3971f..e457a15b4 100644
--- a/crates/jmap-proto/src/response/serialize.rs
+++ b/crates/jmap-proto/src/response/serialize.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use serde::{ser::SerializeSeq, Serialize};
 
diff --git a/crates/jmap-proto/src/types/acl.rs b/crates/jmap-proto/src/types/acl.rs
index 39d01b2ac..8b898a4b4 100644
--- a/crates/jmap-proto/src/types/acl.rs
+++ b/crates/jmap-proto/src/types/acl.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::{self, Display};
 
diff --git a/crates/jmap-proto/src/types/any_id.rs b/crates/jmap-proto/src/types/any_id.rs
index a3786ebc2..62ec2397e 100644
--- a/crates/jmap-proto/src/types/any_id.rs
+++ b/crates/jmap-proto/src/types/any_id.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     parser::{json::Parser, JsonObjectParser},
diff --git a/crates/jmap-proto/src/types/blob.rs b/crates/jmap-proto/src/types/blob.rs
index 359e56e34..7c920823d 100644
--- a/crates/jmap-proto/src/types/blob.rs
+++ b/crates/jmap-proto/src/types/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Borrow;
 
diff --git a/crates/jmap-proto/src/types/collection.rs b/crates/jmap-proto/src/types/collection.rs
index 5684d534b..4147a91cd 100644
--- a/crates/jmap-proto/src/types/collection.rs
+++ b/crates/jmap-proto/src/types/collection.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::{self, Display, Formatter};
 
diff --git a/crates/jmap-proto/src/types/date.rs b/crates/jmap-proto/src/types/date.rs
index 396988162..1c72a8d33 100644
--- a/crates/jmap-proto/src/types/date.rs
+++ b/crates/jmap-proto/src/types/date.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/jmap-proto/src/types/id.rs b/crates/jmap-proto/src/types/id.rs
index 46bdb11b9..e820ca952 100644
--- a/crates/jmap-proto/src/types/id.rs
+++ b/crates/jmap-proto/src/types/id.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::ops::Deref;
 
diff --git a/crates/jmap-proto/src/types/keyword.rs b/crates/jmap-proto/src/types/keyword.rs
index 3ca381a60..737ea3e0d 100644
--- a/crates/jmap-proto/src/types/keyword.rs
+++ b/crates/jmap-proto/src/types/keyword.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/jmap-proto/src/types/mod.rs b/crates/jmap-proto/src/types/mod.rs
index 1a03ee307..4315d0adc 100644
--- a/crates/jmap-proto/src/types/mod.rs
+++ b/crates/jmap-proto/src/types/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::parser::{json::Parser, JsonObjectParser};
 
diff --git a/crates/jmap-proto/src/types/pointer.rs b/crates/jmap-proto/src/types/pointer.rs
index 0ad1d9ee4..2d6731b35 100644
--- a/crates/jmap-proto/src/types/pointer.rs
+++ b/crates/jmap-proto/src/types/pointer.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/jmap-proto/src/types/property.rs b/crates/jmap-proto/src/types/property.rs
index 66d1482bc..40214d597 100644
--- a/crates/jmap-proto/src/types/property.rs
+++ b/crates/jmap-proto/src/types/property.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::{Display, Formatter};
 
diff --git a/crates/jmap-proto/src/types/state.rs b/crates/jmap-proto/src/types/state.rs
index 50993b99c..20da85dca 100644
--- a/crates/jmap-proto/src/types/state.rs
+++ b/crates/jmap-proto/src/types/state.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::codec::{
     base32_custom::Base32Writer,
diff --git a/crates/jmap-proto/src/types/type_state.rs b/crates/jmap-proto/src/types/type_state.rs
index 4a46b1a53..44bd7aaff 100644
--- a/crates/jmap-proto/src/types/type_state.rs
+++ b/crates/jmap-proto/src/types/type_state.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/jmap-proto/src/types/value.rs b/crates/jmap-proto/src/types/value.rs
index 6bb86dc6a..90a2952d4 100644
--- a/crates/jmap-proto/src/types/value.rs
+++ b/crates/jmap-proto/src/types/value.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, fmt::Display};
 
diff --git a/crates/jmap/src/api/autoconfig.rs b/crates/jmap/src/api/autoconfig.rs
index a384118a0..e51b006d4 100644
--- a/crates/jmap/src/api/autoconfig.rs
+++ b/crates/jmap/src/api/autoconfig.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Write;
 
diff --git a/crates/jmap/src/api/event_source.rs b/crates/jmap/src/api/event_source.rs
index 0c1e6ec81..2156988cd 100644
--- a/crates/jmap/src/api/event_source.rs
+++ b/crates/jmap/src/api/event_source.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     sync::Arc,
diff --git a/crates/jmap/src/api/http.rs b/crates/jmap/src/api/http.rs
index 5d5591021..89397b826 100644
--- a/crates/jmap/src/api/http.rs
+++ b/crates/jmap/src/api/http.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{net::IpAddr, sync::Arc};
 
diff --git a/crates/jmap/src/api/management/dkim.rs b/crates/jmap/src/api/management/dkim.rs
index 5d00e30fd..6dd7e5baf 100644
--- a/crates/jmap/src/api/management/dkim.rs
+++ b/crates/jmap/src/api/management/dkim.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::str::FromStr;
 
diff --git a/crates/jmap/src/api/management/domain.rs b/crates/jmap/src/api/management/domain.rs
index 460155a87..cedc414ce 100644
--- a/crates/jmap/src/api/management/domain.rs
+++ b/crates/jmap/src/api/management/domain.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use directory::backend::internal::manage::ManageDirectory;
 
diff --git a/crates/jmap/src/api/management/mod.rs b/crates/jmap/src/api/management/mod.rs
index 684b5ea0e..64e3f5aa3 100644
--- a/crates/jmap/src/api/management/mod.rs
+++ b/crates/jmap/src/api/management/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod dkim;
 pub mod domain;
diff --git a/crates/jmap/src/api/management/principal.rs b/crates/jmap/src/api/management/principal.rs
index e7bc606b8..6ad7b548e 100644
--- a/crates/jmap/src/api/management/principal.rs
+++ b/crates/jmap/src/api/management/principal.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/jmap/src/api/management/queue.rs b/crates/jmap/src/api/management/queue.rs
index b829aa017..d5db8b76b 100644
--- a/crates/jmap/src/api/management/queue.rs
+++ b/crates/jmap/src/api/management/queue.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::str::FromStr;
 
diff --git a/crates/jmap/src/api/management/reload.rs b/crates/jmap/src/api/management/reload.rs
index 053fc52f7..52721e107 100644
--- a/crates/jmap/src/api/management/reload.rs
+++ b/crates/jmap/src/api/management/reload.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use hyper::Method;
 use jmap_proto::error::request::RequestError;
diff --git a/crates/jmap/src/api/management/report.rs b/crates/jmap/src/api/management/report.rs
index 525f473cd..1bed1e1bc 100644
--- a/crates/jmap/src/api/management/report.rs
+++ b/crates/jmap/src/api/management/report.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use hyper::Method;
 use jmap_proto::error::request::RequestError;
diff --git a/crates/jmap/src/api/management/settings.rs b/crates/jmap/src/api/management/settings.rs
index bf6070199..931ff52e3 100644
--- a/crates/jmap/src/api/management/settings.rs
+++ b/crates/jmap/src/api/management/settings.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use hyper::Method;
 use jmap_proto::error::request::RequestError;
diff --git a/crates/jmap/src/api/management/sieve.rs b/crates/jmap/src/api/management/sieve.rs
index 5176734f1..fbcc25d26 100644
--- a/crates/jmap/src/api/management/sieve.rs
+++ b/crates/jmap/src/api/management/sieve.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::SystemTime;
 
diff --git a/crates/jmap/src/api/management/stores.rs b/crates/jmap/src/api/management/stores.rs
index edb1e1675..742526c5d 100644
--- a/crates/jmap/src/api/management/stores.rs
+++ b/crates/jmap/src/api/management/stores.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use base64::{engine::general_purpose::URL_SAFE_NO_PAD, Engine};
 use common::manager::webadmin::Resource;
diff --git a/crates/jmap/src/api/mod.rs b/crates/jmap/src/api/mod.rs
index d963150b3..2a5819f34 100644
--- a/crates/jmap/src/api/mod.rs
+++ b/crates/jmap/src/api/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use hyper::StatusCode;
 use jmap_proto::types::{id::Id, state::State, type_state::DataType};
diff --git a/crates/jmap/src/api/request.rs b/crates/jmap/src/api/request.rs
index 4617d2ad6..35c243b59 100644
--- a/crates/jmap/src/api/request.rs
+++ b/crates/jmap/src/api/request.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/jmap/src/api/session.rs b/crates/jmap/src/api/session.rs
index 5032b661b..34687cbfa 100644
--- a/crates/jmap/src/api/session.rs
+++ b/crates/jmap/src/api/session.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/jmap/src/auth/acl.rs b/crates/jmap/src/auth/acl.rs
index a9546903c..d462abd6f 100644
--- a/crates/jmap/src/auth/acl.rs
+++ b/crates/jmap/src/auth/acl.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use directory::QueryBy;
 use jmap_proto::{
diff --git a/crates/jmap/src/auth/authenticate.rs b/crates/jmap/src/auth/authenticate.rs
index 8c320a215..f28253d1e 100644
--- a/crates/jmap/src/auth/authenticate.rs
+++ b/crates/jmap/src/auth/authenticate.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{net::IpAddr, sync::Arc, time::Instant};
 
diff --git a/crates/jmap/src/auth/mod.rs b/crates/jmap/src/auth/mod.rs
index 985e4fde9..8c2f2c7ae 100644
--- a/crates/jmap/src/auth/mod.rs
+++ b/crates/jmap/src/auth/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::hash_map::DefaultHasher,
diff --git a/crates/jmap/src/auth/oauth/auth.rs b/crates/jmap/src/auth/oauth/auth.rs
index ff7606998..40d9fd6b5 100644
--- a/crates/jmap/src/auth/oauth/auth.rs
+++ b/crates/jmap/src/auth/oauth/auth.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/jmap/src/auth/oauth/mod.rs b/crates/jmap/src/auth/oauth/mod.rs
index 61092e9f8..6ff31a53c 100644
--- a/crates/jmap/src/auth/oauth/mod.rs
+++ b/crates/jmap/src/auth/oauth/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::collections::HashMap;
 
diff --git a/crates/jmap/src/auth/oauth/token.rs b/crates/jmap/src/auth/oauth/token.rs
index 49a41e45a..ce553e0cd 100644
--- a/crates/jmap/src/auth/oauth/token.rs
+++ b/crates/jmap/src/auth/oauth/token.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::SystemTime;
 
diff --git a/crates/jmap/src/auth/rate_limit.rs b/crates/jmap/src/auth/rate_limit.rs
index 3d10accc6..a243bb1b8 100644
--- a/crates/jmap/src/auth/rate_limit.rs
+++ b/crates/jmap/src/auth/rate_limit.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{net::IpAddr, sync::Arc};
 
diff --git a/crates/jmap/src/blob/copy.rs b/crates/jmap/src/blob/copy.rs
index 1d1391950..1f2173f92 100644
--- a/crates/jmap/src/blob/copy.rs
+++ b/crates/jmap/src/blob/copy.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::{
diff --git a/crates/jmap/src/blob/download.rs b/crates/jmap/src/blob/download.rs
index e2cc7e7db..3953cb170 100644
--- a/crates/jmap/src/blob/download.rs
+++ b/crates/jmap/src/blob/download.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::ops::Range;
 
diff --git a/crates/jmap/src/blob/get.rs b/crates/jmap/src/blob/get.rs
index 5347147c9..b7f2790ca 100644
--- a/crates/jmap/src/blob/get.rs
+++ b/crates/jmap/src/blob/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/blob/mod.rs b/crates/jmap/src/blob/mod.rs
index 56818560e..da70fef36 100644
--- a/crates/jmap/src/blob/mod.rs
+++ b/crates/jmap/src/blob/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::types::{blob::BlobId, id::Id};
 
diff --git a/crates/jmap/src/blob/upload.rs b/crates/jmap/src/blob/upload.rs
index 2645d89f7..28ac8e4f5 100644
--- a/crates/jmap/src/blob/upload.rs
+++ b/crates/jmap/src/blob/upload.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/jmap/src/changes/get.rs b/crates/jmap/src/changes/get.rs
index e54f78800..c7728cf2b 100644
--- a/crates/jmap/src/changes/get.rs
+++ b/crates/jmap/src/changes/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/changes/mod.rs b/crates/jmap/src/changes/mod.rs
index b94974039..6c14d1b7f 100644
--- a/crates/jmap/src/changes/mod.rs
+++ b/crates/jmap/src/changes/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod get;
 pub mod query;
diff --git a/crates/jmap/src/changes/query.rs b/crates/jmap/src/changes/query.rs
index 197a02590..1cdac45d8 100644
--- a/crates/jmap/src/changes/query.rs
+++ b/crates/jmap/src/changes/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/changes/state.rs b/crates/jmap/src/changes/state.rs
index 9196a1b29..a6ac7a634 100644
--- a/crates/jmap/src/changes/state.rs
+++ b/crates/jmap/src/changes/state.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/changes/write.rs b/crates/jmap/src/changes/write.rs
index bd280fb8a..db5e78221 100644
--- a/crates/jmap/src/changes/write.rs
+++ b/crates/jmap/src/changes/write.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/jmap/src/email/body.rs b/crates/jmap/src/email/body.rs
index 685bdc9f4..9a48615e5 100644
--- a/crates/jmap/src/email/body.rs
+++ b/crates/jmap/src/email/body.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     object::Object,
diff --git a/crates/jmap/src/email/cache.rs b/crates/jmap/src/email/cache.rs
index 4ab6f538d..8de9b27ed 100644
--- a/crates/jmap/src/email/cache.rs
+++ b/crates/jmap/src/email/cache.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{collections::HashMap, sync::Arc};
 
diff --git a/crates/jmap/src/email/copy.rs b/crates/jmap/src/email/copy.rs
index a938b9684..3bdea1463 100644
--- a/crates/jmap/src/email/copy.rs
+++ b/crates/jmap/src/email/copy.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::{method::MethodError, set::SetError},
diff --git a/crates/jmap/src/email/crypto.rs b/crates/jmap/src/email/crypto.rs
index 848a47363..2c6f6aaa4 100644
--- a/crates/jmap/src/email/crypto.rs
+++ b/crates/jmap/src/email/crypto.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, collections::BTreeSet, fmt::Display, io::Cursor, sync::Arc};
 
diff --git a/crates/jmap/src/email/delete.rs b/crates/jmap/src/email/delete.rs
index 6ecbc6a26..39a79b698 100644
--- a/crates/jmap/src/email/delete.rs
+++ b/crates/jmap/src/email/delete.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/jmap/src/email/get.rs b/crates/jmap/src/email/get.rs
index 7d4e6d6e3..f492ade2c 100644
--- a/crates/jmap/src/email/get.rs
+++ b/crates/jmap/src/email/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/email/headers.rs b/crates/jmap/src/email/headers.rs
index 095656b27..0ceee69d6 100644
--- a/crates/jmap/src/email/headers.rs
+++ b/crates/jmap/src/email/headers.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/jmap/src/email/import.rs b/crates/jmap/src/email/import.rs
index dd405ebd8..767ae3aae 100644
--- a/crates/jmap/src/email/import.rs
+++ b/crates/jmap/src/email/import.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::{
diff --git a/crates/jmap/src/email/index.rs b/crates/jmap/src/email/index.rs
index 8cadfaeea..0b36d8107 100644
--- a/crates/jmap/src/email/index.rs
+++ b/crates/jmap/src/email/index.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/jmap/src/email/ingest.rs b/crates/jmap/src/email/ingest.rs
index 2fc416993..5c2b2c212 100644
--- a/crates/jmap/src/email/ingest.rs
+++ b/crates/jmap/src/email/ingest.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, time::Duration};
 
diff --git a/crates/jmap/src/email/metadata.rs b/crates/jmap/src/email/metadata.rs
index d48fbcd01..8ed520035 100644
--- a/crates/jmap/src/email/metadata.rs
+++ b/crates/jmap/src/email/metadata.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/jmap/src/email/mod.rs b/crates/jmap/src/email/mod.rs
index 7aab45a65..7c45b7563 100644
--- a/crates/jmap/src/email/mod.rs
+++ b/crates/jmap/src/email/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod body;
 pub mod cache;
diff --git a/crates/jmap/src/email/parse.rs b/crates/jmap/src/email/parse.rs
index 9ec712437..ad55ec578 100644
--- a/crates/jmap/src/email/parse.rs
+++ b/crates/jmap/src/email/parse.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/email/query.rs b/crates/jmap/src/email/query.rs
index 6ba0e625c..efacc8a19 100644
--- a/crates/jmap/src/email/query.rs
+++ b/crates/jmap/src/email/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/email/set.rs b/crates/jmap/src/email/set.rs
index 19f011160..26e0f4ea5 100644
--- a/crates/jmap/src/email/set.rs
+++ b/crates/jmap/src/email/set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, collections::HashMap, slice::IterMut};
 
diff --git a/crates/jmap/src/email/snippet.rs b/crates/jmap/src/email/snippet.rs
index 5f2c11338..38544e672 100644
--- a/crates/jmap/src/email/snippet.rs
+++ b/crates/jmap/src/email/snippet.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/identity/get.rs b/crates/jmap/src/identity/get.rs
index e7d86ae49..c8ad3c23b 100644
--- a/crates/jmap/src/identity/get.rs
+++ b/crates/jmap/src/identity/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use directory::QueryBy;
 use jmap_proto::{
diff --git a/crates/jmap/src/identity/mod.rs b/crates/jmap/src/identity/mod.rs
index 3ac096b0a..2caab5e76 100644
--- a/crates/jmap/src/identity/mod.rs
+++ b/crates/jmap/src/identity/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod get;
 pub mod set;
diff --git a/crates/jmap/src/identity/set.rs b/crates/jmap/src/identity/set.rs
index 686beea9e..a21dbd013 100644
--- a/crates/jmap/src/identity/set.rs
+++ b/crates/jmap/src/identity/set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use directory::QueryBy;
 use jmap_proto::{
diff --git a/crates/jmap/src/lib.rs b/crates/jmap/src/lib.rs
index 1840710d9..4f308b3c8 100644
--- a/crates/jmap/src/lib.rs
+++ b/crates/jmap/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::hash_map::RandomState,
diff --git a/crates/jmap/src/mailbox/get.rs b/crates/jmap/src/mailbox/get.rs
index 40529e1bd..56a5fcc62 100644
--- a/crates/jmap/src/mailbox/get.rs
+++ b/crates/jmap/src/mailbox/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/mailbox/mod.rs b/crates/jmap/src/mailbox/mod.rs
index f6e3e61bf..ed0deb833 100644
--- a/crates/jmap/src/mailbox/mod.rs
+++ b/crates/jmap/src/mailbox/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::slice::Iter;
 
diff --git a/crates/jmap/src/mailbox/query.rs b/crates/jmap/src/mailbox/query.rs
index 5799d4596..eecdd9ca5 100644
--- a/crates/jmap/src/mailbox/query.rs
+++ b/crates/jmap/src/mailbox/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/mailbox/set.rs b/crates/jmap/src/mailbox/set.rs
index a18b6dd69..1ced1c69e 100644
--- a/crates/jmap/src/mailbox/set.rs
+++ b/crates/jmap/src/mailbox/set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::config::jmap::settings::SpecialUse;
 use jmap_proto::{
diff --git a/crates/jmap/src/principal/get.rs b/crates/jmap/src/principal/get.rs
index 8b12d1d55..c766026f3 100644
--- a/crates/jmap/src/principal/get.rs
+++ b/crates/jmap/src/principal/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use directory::QueryBy;
 use jmap_proto::{
diff --git a/crates/jmap/src/principal/mod.rs b/crates/jmap/src/principal/mod.rs
index cc153667f..8e89f0981 100644
--- a/crates/jmap/src/principal/mod.rs
+++ b/crates/jmap/src/principal/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod get;
 pub mod query;
diff --git a/crates/jmap/src/principal/query.rs b/crates/jmap/src/principal/query.rs
index f42608fb7..62a633877 100644
--- a/crates/jmap/src/principal/query.rs
+++ b/crates/jmap/src/principal/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use directory::QueryBy;
 use jmap_proto::{
diff --git a/crates/jmap/src/push/ece.rs b/crates/jmap/src/push/ece.rs
index b693956ac..03bc41582 100644
--- a/crates/jmap/src/push/ece.rs
+++ b/crates/jmap/src/push/ece.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use aes_gcm::{
     aead::{generic_array::GenericArray, Aead},
diff --git a/crates/jmap/src/push/get.rs b/crates/jmap/src/push/get.rs
index 4fc9a00f0..08418af56 100644
--- a/crates/jmap/src/push/get.rs
+++ b/crates/jmap/src/push/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use base64::{engine::general_purpose, Engine};
 use jmap_proto::{
diff --git a/crates/jmap/src/push/manager.rs b/crates/jmap/src/push/manager.rs
index 9ef5cdd7c..de8d43987 100644
--- a/crates/jmap/src/push/manager.rs
+++ b/crates/jmap/src/push/manager.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use base64::{engine::general_purpose, Engine};
 use common::IPC_CHANNEL_BUFFER;
diff --git a/crates/jmap/src/push/mod.rs b/crates/jmap/src/push/mod.rs
index ab1169e39..9e6dae69d 100644
--- a/crates/jmap/src/push/mod.rs
+++ b/crates/jmap/src/push/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod ece;
 pub mod get;
diff --git a/crates/jmap/src/push/set.rs b/crates/jmap/src/push/set.rs
index bb8f5e656..9402e08f7 100644
--- a/crates/jmap/src/push/set.rs
+++ b/crates/jmap/src/push/set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use base64::{engine::general_purpose, Engine};
 use jmap_proto::{
diff --git a/crates/jmap/src/quota/get.rs b/crates/jmap/src/quota/get.rs
index 930458271..3c97f8d08 100644
--- a/crates/jmap/src/quota/get.rs
+++ b/crates/jmap/src/quota/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/quota/mod.rs b/crates/jmap/src/quota/mod.rs
index cc153667f..8e89f0981 100644
--- a/crates/jmap/src/quota/mod.rs
+++ b/crates/jmap/src/quota/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod get;
 pub mod query;
diff --git a/crates/jmap/src/quota/query.rs b/crates/jmap/src/quota/query.rs
index 5add882e3..a869d2aa9 100644
--- a/crates/jmap/src/quota/query.rs
+++ b/crates/jmap/src/quota/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/quota/set.rs b/crates/jmap/src/quota/set.rs
index 09e814ccb..a88349cd6 100644
--- a/crates/jmap/src/quota/set.rs
+++ b/crates/jmap/src/quota/set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     object::index::{IndexAs, IndexProperty},
diff --git a/crates/jmap/src/services/delivery.rs b/crates/jmap/src/services/delivery.rs
index 0bb0f10be..fc7321258 100644
--- a/crates/jmap/src/services/delivery.rs
+++ b/crates/jmap/src/services/delivery.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::DeliveryEvent;
 use tokio::sync::mpsc;
diff --git a/crates/jmap/src/services/gossip/heartbeat.rs b/crates/jmap/src/services/gossip/heartbeat.rs
index ec7aeba22..4aec1e15d 100644
--- a/crates/jmap/src/services/gossip/heartbeat.rs
+++ b/crates/jmap/src/services/gossip/heartbeat.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::{Peer, State, HEARTBEAT_WINDOW, HEARTBEAT_WINDOW_MASK};
 use std::time::Instant;
diff --git a/crates/jmap/src/services/gossip/leave.rs b/crates/jmap/src/services/gossip/leave.rs
index 10eb33081..9e0f121d0 100644
--- a/crates/jmap/src/services/gossip/leave.rs
+++ b/crates/jmap/src/services/gossip/leave.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::services::gossip::State;
 
diff --git a/crates/jmap/src/services/gossip/mod.rs b/crates/jmap/src/services/gossip/mod.rs
index 4009fcbef..ee48c009f 100644
--- a/crates/jmap/src/services/gossip/mod.rs
+++ b/crates/jmap/src/services/gossip/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod heartbeat;
 pub mod leave;
diff --git a/crates/jmap/src/services/gossip/peer.rs b/crates/jmap/src/services/gossip/peer.rs
index 1e17ff0cb..65203e128 100644
--- a/crates/jmap/src/services/gossip/peer.rs
+++ b/crates/jmap/src/services/gossip/peer.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fmt::Display, net::IpAddr, time::Instant};
 
diff --git a/crates/jmap/src/services/gossip/ping.rs b/crates/jmap/src/services/gossip/ping.rs
index b34c80a71..27b09a779 100644
--- a/crates/jmap/src/services/gossip/ping.rs
+++ b/crates/jmap/src/services/gossip/ping.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use smtp::queue;
 
diff --git a/crates/jmap/src/services/gossip/request.rs b/crates/jmap/src/services/gossip/request.rs
index bfdc9b7a4..51b99cc86 100644
--- a/crates/jmap/src/services/gossip/request.rs
+++ b/crates/jmap/src/services/gossip/request.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::auth::SymmetricEncrypt;
 
diff --git a/crates/jmap/src/services/gossip/spawn.rs b/crates/jmap/src/services/gossip/spawn.rs
index 84ad927c3..02e065ea2 100644
--- a/crates/jmap/src/services/gossip/spawn.rs
+++ b/crates/jmap/src/services/gossip/spawn.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::auth::SymmetricEncrypt;
 use crate::JmapInstance;
diff --git a/crates/jmap/src/services/housekeeper.rs b/crates/jmap/src/services/housekeeper.rs
index f7d24816b..f33b7ea10 100644
--- a/crates/jmap/src/services/housekeeper.rs
+++ b/crates/jmap/src/services/housekeeper.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::BinaryHeap,
diff --git a/crates/jmap/src/services/index.rs b/crates/jmap/src/services/index.rs
index cbb3e1b70..9a6aa1848 100644
--- a/crates/jmap/src/services/index.rs
+++ b/crates/jmap/src/services/index.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::types::{collection::Collection, property::Property};
 use store::{
diff --git a/crates/jmap/src/services/ingest.rs b/crates/jmap/src/services/ingest.rs
index 58e14ac92..767f686a6 100644
--- a/crates/jmap/src/services/ingest.rs
+++ b/crates/jmap/src/services/ingest.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{DeliveryResult, IngestMessage};
 use directory::QueryBy;
diff --git a/crates/jmap/src/services/mod.rs b/crates/jmap/src/services/mod.rs
index f3a92a89d..c2017b94b 100644
--- a/crates/jmap/src/services/mod.rs
+++ b/crates/jmap/src/services/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod delivery;
 pub mod gossip;
diff --git a/crates/jmap/src/services/state.rs b/crates/jmap/src/services/state.rs
index 289aa7573..1b05fcc77 100644
--- a/crates/jmap/src/services/state.rs
+++ b/crates/jmap/src/services/state.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant, SystemTime};
 
diff --git a/crates/jmap/src/sieve/get.rs b/crates/jmap/src/sieve/get.rs
index c17d0d794..bf82dca47 100644
--- a/crates/jmap/src/sieve/get.rs
+++ b/crates/jmap/src/sieve/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/jmap/src/sieve/ingest.rs b/crates/jmap/src/sieve/ingest.rs
index 6fe0d1720..10c8ca155 100644
--- a/crates/jmap/src/sieve/ingest.rs
+++ b/crates/jmap/src/sieve/ingest.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/jmap/src/sieve/mod.rs b/crates/jmap/src/sieve/mod.rs
index e806a3cc7..79c36d4dd 100644
--- a/crates/jmap/src/sieve/mod.rs
+++ b/crates/jmap/src/sieve/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/jmap/src/sieve/query.rs b/crates/jmap/src/sieve/query.rs
index 63117bc69..1ceb1c1ac 100644
--- a/crates/jmap/src/sieve/query.rs
+++ b/crates/jmap/src/sieve/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/sieve/set.rs b/crates/jmap/src/sieve/set.rs
index d8cb964c2..3a68a7b2f 100644
--- a/crates/jmap/src/sieve/set.rs
+++ b/crates/jmap/src/sieve/set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::{
diff --git a/crates/jmap/src/sieve/validate.rs b/crates/jmap/src/sieve/validate.rs
index a7dc776b3..10046600e 100644
--- a/crates/jmap/src/sieve/validate.rs
+++ b/crates/jmap/src/sieve/validate.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::{
diff --git a/crates/jmap/src/submission/get.rs b/crates/jmap/src/submission/get.rs
index 102ae2068..4c6db4a3e 100644
--- a/crates/jmap/src/submission/get.rs
+++ b/crates/jmap/src/submission/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/submission/mod.rs b/crates/jmap/src/submission/mod.rs
index 5b87a1fe4..b459a10cb 100644
--- a/crates/jmap/src/submission/mod.rs
+++ b/crates/jmap/src/submission/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod get;
 pub mod query;
diff --git a/crates/jmap/src/submission/query.rs b/crates/jmap/src/submission/query.rs
index 1442b73bc..7f30b4c4f 100644
--- a/crates/jmap/src/submission/query.rs
+++ b/crates/jmap/src/submission/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/submission/set.rs b/crates/jmap/src/submission/set.rs
index 7cb9adbc8..2fc911300 100644
--- a/crates/jmap/src/submission/set.rs
+++ b/crates/jmap/src/submission/set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{collections::HashMap, sync::Arc};
 
diff --git a/crates/jmap/src/thread/get.rs b/crates/jmap/src/thread/get.rs
index 5396d29b8..da06d2d96 100644
--- a/crates/jmap/src/thread/get.rs
+++ b/crates/jmap/src/thread/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/thread/mod.rs b/crates/jmap/src/thread/mod.rs
index e2021b2cc..06c4e78e9 100644
--- a/crates/jmap/src/thread/mod.rs
+++ b/crates/jmap/src/thread/mod.rs
@@ -1,24 +1,7 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod get;
diff --git a/crates/jmap/src/vacation/get.rs b/crates/jmap/src/vacation/get.rs
index 53cc8218f..1dd3a6d1e 100644
--- a/crates/jmap/src/vacation/get.rs
+++ b/crates/jmap/src/vacation/get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     error::method::MethodError,
diff --git a/crates/jmap/src/vacation/mod.rs b/crates/jmap/src/vacation/mod.rs
index 3ac096b0a..2caab5e76 100644
--- a/crates/jmap/src/vacation/mod.rs
+++ b/crates/jmap/src/vacation/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod get;
 pub mod set;
diff --git a/crates/jmap/src/vacation/set.rs b/crates/jmap/src/vacation/set.rs
index 186100bfd..bc8258133 100644
--- a/crates/jmap/src/vacation/set.rs
+++ b/crates/jmap/src/vacation/set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/jmap/src/websocket/mod.rs b/crates/jmap/src/websocket/mod.rs
index b543207c9..932f8e592 100644
--- a/crates/jmap/src/websocket/mod.rs
+++ b/crates/jmap/src/websocket/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod stream;
 pub mod upgrade;
diff --git a/crates/jmap/src/websocket/stream.rs b/crates/jmap/src/websocket/stream.rs
index 2e6d46698..1c28ebd24 100644
--- a/crates/jmap/src/websocket/stream.rs
+++ b/crates/jmap/src/websocket/stream.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{sync::Arc, time::Instant};
 
diff --git a/crates/jmap/src/websocket/upgrade.rs b/crates/jmap/src/websocket/upgrade.rs
index 5bdc654a4..5c47e0eba 100644
--- a/crates/jmap/src/websocket/upgrade.rs
+++ b/crates/jmap/src/websocket/upgrade.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/main/src/main.rs b/crates/main/src/main.rs
index e2f991210..3403620c4 100644
--- a/crates/main/src/main.rs
+++ b/crates/main/src/main.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/managesieve/src/core/client.rs b/crates/managesieve/src/core/client.rs
index ee4e6fe20..537915363 100644
--- a/crates/managesieve/src/core/client.rs
+++ b/crates/managesieve/src/core/client.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::listener::SessionStream;
 use imap_proto::receiver::{self, Request};
diff --git a/crates/managesieve/src/core/mod.rs b/crates/managesieve/src/core/mod.rs
index c6ea872e0..822f3fc4a 100644
--- a/crates/managesieve/src/core/mod.rs
+++ b/crates/managesieve/src/core/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod client;
 pub mod session;
diff --git a/crates/managesieve/src/core/session.rs b/crates/managesieve/src/core/session.rs
index 4b1021085..2ec0b38f3 100644
--- a/crates/managesieve/src/core/session.rs
+++ b/crates/managesieve/src/core/session.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::listener::{SessionData, SessionManager, SessionStream};
 use imap_proto::receiver::{self, Receiver};
diff --git a/crates/managesieve/src/lib.rs b/crates/managesieve/src/lib.rs
index 9c95268d9..280736a76 100644
--- a/crates/managesieve/src/lib.rs
+++ b/crates/managesieve/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod core;
 pub mod op;
diff --git a/crates/managesieve/src/op/authenticate.rs b/crates/managesieve/src/op/authenticate.rs
index d069c5437..2be23968c 100644
--- a/crates/managesieve/src/op/authenticate.rs
+++ b/crates/managesieve/src/op/authenticate.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{
     config::server::ServerProtocol,
diff --git a/crates/managesieve/src/op/capability.rs b/crates/managesieve/src/op/capability.rs
index f8d4a54c3..45d7273a2 100644
--- a/crates/managesieve/src/op/capability.rs
+++ b/crates/managesieve/src/op/capability.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::listener::SessionStream;
 use jmap_proto::request::capability::Capabilities;
diff --git a/crates/managesieve/src/op/checkscript.rs b/crates/managesieve/src/op/checkscript.rs
index dd839e032..4fb0717bf 100644
--- a/crates/managesieve/src/op/checkscript.rs
+++ b/crates/managesieve/src/op/checkscript.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::receiver::Request;
 use tokio::io::{AsyncRead, AsyncWrite};
diff --git a/crates/managesieve/src/op/deletescript.rs b/crates/managesieve/src/op/deletescript.rs
index b1fab65fa..8d322f3af 100644
--- a/crates/managesieve/src/op/deletescript.rs
+++ b/crates/managesieve/src/op/deletescript.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::receiver::Request;
 use jmap_proto::types::collection::Collection;
diff --git a/crates/managesieve/src/op/getscript.rs b/crates/managesieve/src/op/getscript.rs
index b0c65f31b..72a3af328 100644
--- a/crates/managesieve/src/op/getscript.rs
+++ b/crates/managesieve/src/op/getscript.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::receiver::Request;
 use jmap::sieve::set::ObjectBlobId;
diff --git a/crates/managesieve/src/op/havespace.rs b/crates/managesieve/src/op/havespace.rs
index 6c60fbcf9..a8237f682 100644
--- a/crates/managesieve/src/op/havespace.rs
+++ b/crates/managesieve/src/op/havespace.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::receiver::Request;
 use tokio::io::{AsyncRead, AsyncWrite};
diff --git a/crates/managesieve/src/op/listscripts.rs b/crates/managesieve/src/op/listscripts.rs
index 49dd34588..a4dbe622d 100644
--- a/crates/managesieve/src/op/listscripts.rs
+++ b/crates/managesieve/src/op/listscripts.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     object::Object,
diff --git a/crates/managesieve/src/op/logout.rs b/crates/managesieve/src/op/logout.rs
index c47362b45..60e68df25 100644
--- a/crates/managesieve/src/op/logout.rs
+++ b/crates/managesieve/src/op/logout.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use tokio::io::{AsyncRead, AsyncWrite};
 
diff --git a/crates/managesieve/src/op/mod.rs b/crates/managesieve/src/op/mod.rs
index 7cd4e1b85..3412f3c79 100644
--- a/crates/managesieve/src/op/mod.rs
+++ b/crates/managesieve/src/op/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::error::method::MethodError;
 
diff --git a/crates/managesieve/src/op/noop.rs b/crates/managesieve/src/op/noop.rs
index 20c6ff64b..7137d08e1 100644
--- a/crates/managesieve/src/op/noop.rs
+++ b/crates/managesieve/src/op/noop.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::receiver::Request;
 use tokio::io::{AsyncRead, AsyncWrite};
diff --git a/crates/managesieve/src/op/putscript.rs b/crates/managesieve/src/op/putscript.rs
index 01974a05a..2e16021f6 100644
--- a/crates/managesieve/src/op/putscript.rs
+++ b/crates/managesieve/src/op/putscript.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::receiver::Request;
 use jmap::sieve::set::{ObjectBlobId, SCHEMA};
diff --git a/crates/managesieve/src/op/renamescript.rs b/crates/managesieve/src/op/renamescript.rs
index bad6e182f..d29d8e8ff 100644
--- a/crates/managesieve/src/op/renamescript.rs
+++ b/crates/managesieve/src/op/renamescript.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::receiver::Request;
 use jmap::sieve::set::SCHEMA;
diff --git a/crates/managesieve/src/op/setactive.rs b/crates/managesieve/src/op/setactive.rs
index 6859f85db..82dd51ace 100644
--- a/crates/managesieve/src/op/setactive.rs
+++ b/crates/managesieve/src/op/setactive.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::receiver::Request;
 use jmap_proto::types::collection::Collection;
diff --git a/crates/nlp/src/bayes/cache.rs b/crates/nlp/src/bayes/cache.rs
index 798b5c62b..af1b12344 100644
--- a/crates/nlp/src/bayes/cache.rs
+++ b/crates/nlp/src/bayes/cache.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     hash::BuildHasherDefault,
diff --git a/crates/nlp/src/bayes/classify.rs b/crates/nlp/src/bayes/classify.rs
index 63478a853..c18c367f8 100644
--- a/crates/nlp/src/bayes/classify.rs
+++ b/crates/nlp/src/bayes/classify.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::tokenizers::osb::OsbToken;
 
diff --git a/crates/nlp/src/bayes/mod.rs b/crates/nlp/src/bayes/mod.rs
index 5a474ec71..7516044ec 100644
--- a/crates/nlp/src/bayes/mod.rs
+++ b/crates/nlp/src/bayes/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{collections::HashMap, hash::BuildHasherDefault};
 
diff --git a/crates/nlp/src/bayes/tokenize.rs b/crates/nlp/src/bayes/tokenize.rs
index a21566346..2f3ae3236 100644
--- a/crates/nlp/src/bayes/tokenize.rs
+++ b/crates/nlp/src/bayes/tokenize.rs
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
+
 use std::borrow::Cow;
 
 use utils::suffixlist::PublicSuffix;
diff --git a/crates/nlp/src/bayes/train.rs b/crates/nlp/src/bayes/train.rs
index eabf9118a..c2281f4e9 100644
--- a/crates/nlp/src/bayes/train.rs
+++ b/crates/nlp/src/bayes/train.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::tokenizers::osb::OsbToken;
 
diff --git a/crates/nlp/src/language/detect.rs b/crates/nlp/src/language/detect.rs
index e5b780dc8..0312f0d8c 100644
--- a/crates/nlp/src/language/detect.rs
+++ b/crates/nlp/src/language/detect.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashMap;
 use whatlang::{detect, Lang};
diff --git a/crates/nlp/src/language/mod.rs b/crates/nlp/src/language/mod.rs
index 30f0a05b2..cf2ee2573 100644
--- a/crates/nlp/src/language/mod.rs
+++ b/crates/nlp/src/language/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod detect;
 pub mod search_snippet;
diff --git a/crates/nlp/src/language/search_snippet.rs b/crates/nlp/src/language/search_snippet.rs
index 676191ea9..4da899a32 100644
--- a/crates/nlp/src/language/search_snippet.rs
+++ b/crates/nlp/src/language/search_snippet.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::Language;
 
diff --git a/crates/nlp/src/language/stemmer.rs b/crates/nlp/src/language/stemmer.rs
index 6732bb56c..c3f6c9ce1 100644
--- a/crates/nlp/src/language/stemmer.rs
+++ b/crates/nlp/src/language/stemmer.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/nlp/src/language/stopwords.rs b/crates/nlp/src/language/stopwords.rs
index a07e180d5..aa7ecef82 100644
--- a/crates/nlp/src/language/stopwords.rs
+++ b/crates/nlp/src/language/stopwords.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use phf::{phf_set, Set};
 pub static STOP_WORDS: &[Option<&Set<&'static str>>] = &[
diff --git a/crates/nlp/src/tokenizers/chinese.rs b/crates/nlp/src/tokenizers/chinese.rs
index 4ba246cb9..e4bba1ed6 100644
--- a/crates/nlp/src/tokenizers/chinese.rs
+++ b/crates/nlp/src/tokenizers/chinese.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, vec::IntoIter};
 
diff --git a/crates/nlp/src/tokenizers/japanese.rs b/crates/nlp/src/tokenizers/japanese.rs
index d0762c868..451d4b108 100644
--- a/crates/nlp/src/tokenizers/japanese.rs
+++ b/crates/nlp/src/tokenizers/japanese.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::vec::IntoIter;
 
diff --git a/crates/nlp/src/tokenizers/mod.rs b/crates/nlp/src/tokenizers/mod.rs
index dda42d84a..bbd5f0501 100644
--- a/crates/nlp/src/tokenizers/mod.rs
+++ b/crates/nlp/src/tokenizers/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod chinese;
 pub mod japanese;
diff --git a/crates/nlp/src/tokenizers/osb.rs b/crates/nlp/src/tokenizers/osb.rs
index 53976140c..e6cba5f87 100644
--- a/crates/nlp/src/tokenizers/osb.rs
+++ b/crates/nlp/src/tokenizers/osb.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, iter::Peekable};
 
diff --git a/crates/nlp/src/tokenizers/space.rs b/crates/nlp/src/tokenizers/space.rs
index f3ef68918..e3a7b6098 100644
--- a/crates/nlp/src/tokenizers/space.rs
+++ b/crates/nlp/src/tokenizers/space.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::str::Chars;
 
diff --git a/crates/nlp/src/tokenizers/types.rs b/crates/nlp/src/tokenizers/types.rs
index 1e79a9e52..f69fe0abe 100644
--- a/crates/nlp/src/tokenizers/types.rs
+++ b/crates/nlp/src/tokenizers/types.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::str::CharIndices;
 
diff --git a/crates/nlp/src/tokenizers/word.rs b/crates/nlp/src/tokenizers/word.rs
index 26854fbfd..80482c7ac 100644
--- a/crates/nlp/src/tokenizers/word.rs
+++ b/crates/nlp/src/tokenizers/word.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, str::CharIndices};
 
diff --git a/crates/pop3/src/client.rs b/crates/pop3/src/client.rs
index cdc35abd0..6f5dd035d 100644
--- a/crates/pop3/src/client.rs
+++ b/crates/pop3/src/client.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::listener::SessionStream;
 use mail_send::Credentials;
diff --git a/crates/pop3/src/lib.rs b/crates/pop3/src/lib.rs
index 00809b196..c973b8485 100644
--- a/crates/pop3/src/lib.rs
+++ b/crates/pop3/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{net::IpAddr, sync::Arc};
 
diff --git a/crates/pop3/src/mailbox.rs b/crates/pop3/src/mailbox.rs
index a640334a1..90b08103e 100644
--- a/crates/pop3/src/mailbox.rs
+++ b/crates/pop3/src/mailbox.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::collections::BTreeMap;
 
diff --git a/crates/pop3/src/op/authenticate.rs b/crates/pop3/src/op/authenticate.rs
index 857a2d929..c378a822b 100644
--- a/crates/pop3/src/op/authenticate.rs
+++ b/crates/pop3/src/op/authenticate.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{
     config::server::ServerProtocol,
diff --git a/crates/pop3/src/op/delete.rs b/crates/pop3/src/op/delete.rs
index bbde0416d..b27bd6bc5 100644
--- a/crates/pop3/src/op/delete.rs
+++ b/crates/pop3/src/op/delete.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::listener::SessionStream;
 use jmap_proto::types::{state::StateChange, type_state::DataType};
diff --git a/crates/pop3/src/op/fetch.rs b/crates/pop3/src/op/fetch.rs
index e06672f19..19b48fe07 100644
--- a/crates/pop3/src/op/fetch.rs
+++ b/crates/pop3/src/op/fetch.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::listener::SessionStream;
 use jmap::email::metadata::MessageMetadata;
diff --git a/crates/pop3/src/op/list.rs b/crates/pop3/src/op/list.rs
index e75adeaf4..0ee40097e 100644
--- a/crates/pop3/src/op/list.rs
+++ b/crates/pop3/src/op/list.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::listener::SessionStream;
 
diff --git a/crates/pop3/src/op/mod.rs b/crates/pop3/src/op/mod.rs
index 3399ab2ac..bb5f22d7f 100644
--- a/crates/pop3/src/op/mod.rs
+++ b/crates/pop3/src/op/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod authenticate;
 pub mod delete;
diff --git a/crates/pop3/src/protocol/mod.rs b/crates/pop3/src/protocol/mod.rs
index 7f6c07e88..1086ddf41 100644
--- a/crates/pop3/src/protocol/mod.rs
+++ b/crates/pop3/src/protocol/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod request;
 pub mod response;
diff --git a/crates/pop3/src/protocol/request.rs b/crates/pop3/src/protocol/request.rs
index 0b70f0ce2..829f9f363 100644
--- a/crates/pop3/src/protocol/request.rs
+++ b/crates/pop3/src/protocol/request.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/pop3/src/protocol/response.rs b/crates/pop3/src/protocol/response.rs
index 7b806c744..f1f9ec696 100644
--- a/crates/pop3/src/protocol/response.rs
+++ b/crates/pop3/src/protocol/response.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, fmt::Display};
 
diff --git a/crates/pop3/src/session.rs b/crates/pop3/src/session.rs
index b79216aa5..ff3f785d2 100644
--- a/crates/pop3/src/session.rs
+++ b/crates/pop3/src/session.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/smtp/src/core/mod.rs b/crates/smtp/src/core/mod.rs
index 960291f39..4fa124ca1 100644
--- a/crates/smtp/src/core/mod.rs
+++ b/crates/smtp/src/core/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     hash::Hash,
diff --git a/crates/smtp/src/core/params.rs b/crates/smtp/src/core/params.rs
index f4e7291bc..9d7a24e11 100644
--- a/crates/smtp/src/core/params.rs
+++ b/crates/smtp/src/core/params.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/smtp/src/core/throttle.rs b/crates/smtp/src/core/throttle.rs
index cf9059abd..e393acb10 100644
--- a/crates/smtp/src/core/throttle.rs
+++ b/crates/smtp/src/core/throttle.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{
     config::smtp::{queue::QueueQuota, *},
diff --git a/crates/smtp/src/inbound/auth.rs b/crates/smtp/src/inbound/auth.rs
index 2a9dcf0e1..34cf44226 100644
--- a/crates/smtp/src/inbound/auth.rs
+++ b/crates/smtp/src/inbound/auth.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{listener::SessionStream, AuthResult};
 use mail_parser::decoders::base64::base64_decode;
diff --git a/crates/smtp/src/inbound/data.rs b/crates/smtp/src/inbound/data.rs
index a39dedc76..c79d3f3f7 100644
--- a/crates/smtp/src/inbound/data.rs
+++ b/crates/smtp/src/inbound/data.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     borrow::Cow,
diff --git a/crates/smtp/src/inbound/ehlo.rs b/crates/smtp/src/inbound/ehlo.rs
index 5ce8d2651..151d63715 100644
--- a/crates/smtp/src/inbound/ehlo.rs
+++ b/crates/smtp/src/inbound/ehlo.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, SystemTime};
 
diff --git a/crates/smtp/src/inbound/hooks/client.rs b/crates/smtp/src/inbound/hooks/client.rs
index 0a3f4639c..0aa3f2c7c 100644
--- a/crates/smtp/src/inbound/hooks/client.rs
+++ b/crates/smtp/src/inbound/hooks/client.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::config::smtp::session::MTAHook;
 
diff --git a/crates/smtp/src/inbound/hooks/message.rs b/crates/smtp/src/inbound/hooks/message.rs
index a7caee874..8b6c1dac2 100644
--- a/crates/smtp/src/inbound/hooks/message.rs
+++ b/crates/smtp/src/inbound/hooks/message.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashMap;
 use common::{
diff --git a/crates/smtp/src/inbound/hooks/mod.rs b/crates/smtp/src/inbound/hooks/mod.rs
index 85a5e9f61..da106b26b 100644
--- a/crates/smtp/src/inbound/hooks/mod.rs
+++ b/crates/smtp/src/inbound/hooks/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod client;
 pub mod message;
diff --git a/crates/smtp/src/inbound/mail.rs b/crates/smtp/src/inbound/mail.rs
index 7875a2fe1..0ffb6b277 100644
--- a/crates/smtp/src/inbound/mail.rs
+++ b/crates/smtp/src/inbound/mail.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, SystemTime};
 
diff --git a/crates/smtp/src/inbound/milter/client.rs b/crates/smtp/src/inbound/milter/client.rs
index fbbd0de3b..f5394f4ab 100644
--- a/crates/smtp/src/inbound/milter/client.rs
+++ b/crates/smtp/src/inbound/milter/client.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::config::smtp::session::Milter;
 use rustls_pki_types::ServerName;
diff --git a/crates/smtp/src/inbound/milter/macros.rs b/crates/smtp/src/inbound/milter/macros.rs
index 9986d7cc2..2d61a1a26 100644
--- a/crates/smtp/src/inbound/milter/macros.rs
+++ b/crates/smtp/src/inbound/milter/macros.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, net::IpAddr};
 
diff --git a/crates/smtp/src/inbound/milter/message.rs b/crates/smtp/src/inbound/milter/message.rs
index 778ff4e11..aa4f0ce08 100644
--- a/crates/smtp/src/inbound/milter/message.rs
+++ b/crates/smtp/src/inbound/milter/message.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/smtp/src/inbound/milter/mod.rs b/crates/smtp/src/inbound/milter/mod.rs
index 5a57f36a7..a668ea48d 100644
--- a/crates/smtp/src/inbound/milter/mod.rs
+++ b/crates/smtp/src/inbound/milter/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, fmt::Display, net::IpAddr, time::Duration};
 
diff --git a/crates/smtp/src/inbound/milter/protocol.rs b/crates/smtp/src/inbound/milter/protocol.rs
index 09fad4249..f8bcba93f 100644
--- a/crates/smtp/src/inbound/milter/protocol.rs
+++ b/crates/smtp/src/inbound/milter/protocol.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::net::IpAddr;
 
diff --git a/crates/smtp/src/inbound/milter/receiver.rs b/crates/smtp/src/inbound/milter/receiver.rs
index c3a488049..cf7bd99a7 100644
--- a/crates/smtp/src/inbound/milter/receiver.rs
+++ b/crates/smtp/src/inbound/milter/receiver.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/smtp/src/inbound/mod.rs b/crates/smtp/src/inbound/mod.rs
index 166b06a05..83ee1ceb9 100644
--- a/crates/smtp/src/inbound/mod.rs
+++ b/crates/smtp/src/inbound/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/smtp/src/inbound/rcpt.rs b/crates/smtp/src/inbound/rcpt.rs
index a8166fc29..0b4b4b357 100644
--- a/crates/smtp/src/inbound/rcpt.rs
+++ b/crates/smtp/src/inbound/rcpt.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{config::smtp::session::Stage, listener::SessionStream, scripts::ScriptModification};
 use smtp_proto::{
diff --git a/crates/smtp/src/inbound/session.rs b/crates/smtp/src/inbound/session.rs
index 945f18d77..28fddf743 100644
--- a/crates/smtp/src/inbound/session.rs
+++ b/crates/smtp/src/inbound/session.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{
     config::{server::ServerProtocol, smtp::session::Mechanism},
diff --git a/crates/smtp/src/inbound/spawn.rs b/crates/smtp/src/inbound/spawn.rs
index b8a6c26a1..9902bbaf7 100644
--- a/crates/smtp/src/inbound/spawn.rs
+++ b/crates/smtp/src/inbound/spawn.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Instant;
 
diff --git a/crates/smtp/src/inbound/vrfy.rs b/crates/smtp/src/inbound/vrfy.rs
index f846b21b8..2b3833132 100644
--- a/crates/smtp/src/inbound/vrfy.rs
+++ b/crates/smtp/src/inbound/vrfy.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::listener::SessionStream;
 use directory::DirectoryError;
diff --git a/crates/smtp/src/lib.rs b/crates/smtp/src/lib.rs
index 0eafdd110..68466bf25 100644
--- a/crates/smtp/src/lib.rs
+++ b/crates/smtp/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::core::{throttle::ThrottleKeyHasherBuilder, TlsConnectors};
 use core::{Inner, SmtpInstance, SMTP};
diff --git a/crates/smtp/src/outbound/dane/dnssec.rs b/crates/smtp/src/outbound/dane/dnssec.rs
index 5bd5de132..1c2f11e31 100644
--- a/crates/smtp/src/outbound/dane/dnssec.rs
+++ b/crates/smtp/src/outbound/dane/dnssec.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::config::smtp::resolver::{Tlsa, TlsaEntry};
 use mail_auth::{
diff --git a/crates/smtp/src/outbound/dane/mod.rs b/crates/smtp/src/outbound/dane/mod.rs
index d9674c0b7..170bc59e1 100644
--- a/crates/smtp/src/outbound/dane/mod.rs
+++ b/crates/smtp/src/outbound/dane/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod dnssec;
 pub mod verify;
diff --git a/crates/smtp/src/outbound/dane/verify.rs b/crates/smtp/src/outbound/dane/verify.rs
index 2e6b3b9b7..8e001a05a 100644
--- a/crates/smtp/src/outbound/dane/verify.rs
+++ b/crates/smtp/src/outbound/dane/verify.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::config::smtp::resolver::Tlsa;
 use rustls_pki_types::CertificateDer;
diff --git a/crates/smtp/src/outbound/delivery.rs b/crates/smtp/src/outbound/delivery.rs
index 2418fb60e..72d25ed4f 100644
--- a/crates/smtp/src/outbound/delivery.rs
+++ b/crates/smtp/src/outbound/delivery.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::outbound::dane::verify::TlsaVerify;
 use crate::outbound::mta_sts::verify::VerifyPolicy;
diff --git a/crates/smtp/src/outbound/local.rs b/crates/smtp/src/outbound/local.rs
index ed105ba16..ac7c74c13 100644
--- a/crates/smtp/src/outbound/local.rs
+++ b/crates/smtp/src/outbound/local.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{DeliveryEvent, DeliveryResult, IngestMessage};
 use smtp_proto::Response;
diff --git a/crates/smtp/src/outbound/lookup.rs b/crates/smtp/src/outbound/lookup.rs
index a2f70f723..7e8e77e52 100644
--- a/crates/smtp/src/outbound/lookup.rs
+++ b/crates/smtp/src/outbound/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     net::{IpAddr, Ipv4Addr, Ipv6Addr},
diff --git a/crates/smtp/src/outbound/mod.rs b/crates/smtp/src/outbound/mod.rs
index e0e0db0f6..c1083137b 100644
--- a/crates/smtp/src/outbound/mod.rs
+++ b/crates/smtp/src/outbound/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/smtp/src/outbound/mta_sts/lookup.rs b/crates/smtp/src/outbound/mta_sts/lookup.rs
index 8030a3224..58d4b93d3 100644
--- a/crates/smtp/src/outbound/mta_sts/lookup.rs
+++ b/crates/smtp/src/outbound/mta_sts/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     fmt::Display,
diff --git a/crates/smtp/src/outbound/mta_sts/mod.rs b/crates/smtp/src/outbound/mta_sts/mod.rs
index a852e8222..d6c05c87b 100644
--- a/crates/smtp/src/outbound/mta_sts/mod.rs
+++ b/crates/smtp/src/outbound/mta_sts/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod lookup;
 pub mod parse;
diff --git a/crates/smtp/src/outbound/mta_sts/parse.rs b/crates/smtp/src/outbound/mta_sts/parse.rs
index abd37e586..6121ef564 100644
--- a/crates/smtp/src/outbound/mta_sts/parse.rs
+++ b/crates/smtp/src/outbound/mta_sts/parse.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::config::smtp::resolver::{Mode, MxPattern, Policy};
 
diff --git a/crates/smtp/src/outbound/mta_sts/verify.rs b/crates/smtp/src/outbound/mta_sts/verify.rs
index ec6eceaea..827e556ad 100644
--- a/crates/smtp/src/outbound/mta_sts/verify.rs
+++ b/crates/smtp/src/outbound/mta_sts/verify.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::config::smtp::resolver::{Mode, MxPattern, Policy};
 
diff --git a/crates/smtp/src/outbound/session.rs b/crates/smtp/src/outbound/session.rs
index d08576930..c4c4bd074 100644
--- a/crates/smtp/src/outbound/session.rs
+++ b/crates/smtp/src/outbound/session.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::config::smtp::queue::RequireOptional;
 use mail_send::{smtp::AssertReply, Credentials, SmtpClient};
diff --git a/crates/smtp/src/queue/dsn.rs b/crates/smtp/src/queue/dsn.rs
index 4241b3f8a..52b87d986 100644
--- a/crates/smtp/src/queue/dsn.rs
+++ b/crates/smtp/src/queue/dsn.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use chrono::{TimeZone, Utc};
 use common::webhooks::{WebhookDSN, WebhookDSNType, WebhookPayload, WebhookType};
diff --git a/crates/smtp/src/queue/manager.rs b/crates/smtp/src/queue/manager.rs
index ab05bca27..aa2ae6ad6 100644
--- a/crates/smtp/src/queue/manager.rs
+++ b/crates/smtp/src/queue/manager.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{sync::atomic::Ordering, time::Duration};
 
diff --git a/crates/smtp/src/queue/mod.rs b/crates/smtp/src/queue/mod.rs
index b7d92562e..cb68709a5 100644
--- a/crates/smtp/src/queue/mod.rs
+++ b/crates/smtp/src/queue/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     fmt::Display,
diff --git a/crates/smtp/src/queue/quota.rs b/crates/smtp/src/queue/quota.rs
index 3492d68a6..c181b20c5 100644
--- a/crates/smtp/src/queue/quota.rs
+++ b/crates/smtp/src/queue/quota.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{config::smtp::queue::QueueQuota, expr::functions::ResolveVariable};
 use store::{
diff --git a/crates/smtp/src/queue/spool.rs b/crates/smtp/src/queue/spool.rs
index 6167b5deb..c09747e2e 100644
--- a/crates/smtp/src/queue/spool.rs
+++ b/crates/smtp/src/queue/spool.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::queue::DomainPart;
 use std::borrow::Cow;
diff --git a/crates/smtp/src/queue/throttle.rs b/crates/smtp/src/queue/throttle.rs
index 791dfdccc..e5e60a333 100644
--- a/crates/smtp/src/queue/throttle.rs
+++ b/crates/smtp/src/queue/throttle.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{
     config::smtp::Throttle,
diff --git a/crates/smtp/src/reporting/analysis.rs b/crates/smtp/src/reporting/analysis.rs
index 8c32fc77d..6691f2cab 100644
--- a/crates/smtp/src/reporting/analysis.rs
+++ b/crates/smtp/src/reporting/analysis.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     borrow::Cow,
diff --git a/crates/smtp/src/reporting/dkim.rs b/crates/smtp/src/reporting/dkim.rs
index 5aaa2c404..be5f885ba 100644
--- a/crates/smtp/src/reporting/dkim.rs
+++ b/crates/smtp/src/reporting/dkim.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::listener::SessionStream;
 use mail_auth::{
diff --git a/crates/smtp/src/reporting/dmarc.rs b/crates/smtp/src/reporting/dmarc.rs
index 51779a33c..efebba6ad 100644
--- a/crates/smtp/src/reporting/dmarc.rs
+++ b/crates/smtp/src/reporting/dmarc.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::collections::hash_map::Entry;
 
diff --git a/crates/smtp/src/reporting/mod.rs b/crates/smtp/src/reporting/mod.rs
index 4bbdc43d3..e5dda0149 100644
--- a/crates/smtp/src/reporting/mod.rs
+++ b/crates/smtp/src/reporting/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{io, sync::Arc, time::SystemTime};
 
diff --git a/crates/smtp/src/reporting/scheduler.rs b/crates/smtp/src/reporting/scheduler.rs
index e6e526df2..61235e8fb 100644
--- a/crates/smtp/src/reporting/scheduler.rs
+++ b/crates/smtp/src/reporting/scheduler.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::{AHashMap, RandomState};
 use common::Core;
diff --git a/crates/smtp/src/reporting/spf.rs b/crates/smtp/src/reporting/spf.rs
index 8ad915cd2..f7354b249 100644
--- a/crates/smtp/src/reporting/spf.rs
+++ b/crates/smtp/src/reporting/spf.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::listener::SessionStream;
 use mail_auth::{report::AuthFailureType, AuthenticationResults, SpfOutput};
diff --git a/crates/smtp/src/reporting/tls.rs b/crates/smtp/src/reporting/tls.rs
index 87fcf8e19..ea5723ac6 100644
--- a/crates/smtp/src/reporting/tls.rs
+++ b/crates/smtp/src/reporting/tls.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{collections::hash_map::Entry, sync::Arc, time::Duration};
 
diff --git a/crates/smtp/src/scripts/envelope.rs b/crates/smtp/src/scripts/envelope.rs
index f119aed43..5cf1177bc 100644
--- a/crates/smtp/src/scripts/envelope.rs
+++ b/crates/smtp/src/scripts/envelope.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use sieve::Envelope;
 use smtp_proto::{
diff --git a/crates/smtp/src/scripts/event_loop.rs b/crates/smtp/src/scripts/event_loop.rs
index 7ee087a15..a10709ab4 100644
--- a/crates/smtp/src/scripts/event_loop.rs
+++ b/crates/smtp/src/scripts/event_loop.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, sync::Arc};
 
diff --git a/crates/smtp/src/scripts/exec.rs b/crates/smtp/src/scripts/exec.rs
index 6592920cc..d7887fc5b 100644
--- a/crates/smtp/src/scripts/exec.rs
+++ b/crates/smtp/src/scripts/exec.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{sync::Arc, time::SystemTime};
 
diff --git a/crates/smtp/src/scripts/mod.rs b/crates/smtp/src/scripts/mod.rs
index b744a34a2..68972b346 100644
--- a/crates/smtp/src/scripts/mod.rs
+++ b/crates/smtp/src/scripts/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::borrow::Cow;
 
diff --git a/crates/store/src/backend/elastic/index.rs b/crates/store/src/backend/elastic/index.rs
index 57d74db90..e5fb2afb2 100644
--- a/crates/store/src/backend/elastic/index.rs
+++ b/crates/store/src/backend/elastic/index.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, fmt::Display};
 
diff --git a/crates/store/src/backend/elastic/mod.rs b/crates/store/src/backend/elastic/mod.rs
index 382d0fe13..fb00057ca 100644
--- a/crates/store/src/backend/elastic/mod.rs
+++ b/crates/store/src/backend/elastic/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use elasticsearch::{
     auth::Credentials,
diff --git a/crates/store/src/backend/elastic/query.rs b/crates/store/src/backend/elastic/query.rs
index dfdedbae2..39814c4aa 100644
--- a/crates/store/src/backend/elastic/query.rs
+++ b/crates/store/src/backend/elastic/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, fmt::Display};
 
diff --git a/crates/store/src/backend/foundationdb/blob.rs b/crates/store/src/backend/foundationdb/blob.rs
index 6e4b07020..79542f0de 100644
--- a/crates/store/src/backend/foundationdb/blob.rs
+++ b/crates/store/src/backend/foundationdb/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::ops::Range;
 
diff --git a/crates/store/src/backend/foundationdb/main.rs b/crates/store/src/backend/foundationdb/main.rs
index 2534c811d..2f130b48b 100644
--- a/crates/store/src/backend/foundationdb/main.rs
+++ b/crates/store/src/backend/foundationdb/main.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/store/src/backend/foundationdb/mod.rs b/crates/store/src/backend/foundationdb/mod.rs
index 88fbdc3e1..d5fd11f3b 100644
--- a/crates/store/src/backend/foundationdb/mod.rs
+++ b/crates/store/src/backend/foundationdb/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/crates/store/src/backend/foundationdb/read.rs b/crates/store/src/backend/foundationdb/read.rs
index 080fb5af3..2cfc054da 100644
--- a/crates/store/src/backend/foundationdb/read.rs
+++ b/crates/store/src/backend/foundationdb/read.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use foundationdb::{
     future::FdbSlice,
diff --git a/crates/store/src/backend/foundationdb/write.rs b/crates/store/src/backend/foundationdb/write.rs
index cdf1d5052..35118e559 100644
--- a/crates/store/src/backend/foundationdb/write.rs
+++ b/crates/store/src/backend/foundationdb/write.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     cmp::Ordering,
diff --git a/crates/store/src/backend/fs/mod.rs b/crates/store/src/backend/fs/mod.rs
index abeff842a..8f069e29d 100644
--- a/crates/store/src/backend/fs/mod.rs
+++ b/crates/store/src/backend/fs/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{io::SeekFrom, ops::Range, path::PathBuf};
 
diff --git a/crates/store/src/backend/memory/mod.rs b/crates/store/src/backend/memory/mod.rs
index 56decdc58..54d0f5ef7 100644
--- a/crates/store/src/backend/memory/mod.rs
+++ b/crates/store/src/backend/memory/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashMap;
 use utils::{config::Config, glob::GlobPattern};
diff --git a/crates/store/src/backend/mod.rs b/crates/store/src/backend/mod.rs
index cf0b5cfc0..3af7828d3 100644
--- a/crates/store/src/backend/mod.rs
+++ b/crates/store/src/backend/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 #[cfg(feature = "elastic")]
 pub mod elastic;
diff --git a/crates/store/src/backend/mysql/blob.rs b/crates/store/src/backend/mysql/blob.rs
index 92c3cb4c3..ac725f0af 100644
--- a/crates/store/src/backend/mysql/blob.rs
+++ b/crates/store/src/backend/mysql/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::ops::Range;
 
diff --git a/crates/store/src/backend/mysql/lookup.rs b/crates/store/src/backend/mysql/lookup.rs
index 8bc7f4424..af080901d 100644
--- a/crates/store/src/backend/mysql/lookup.rs
+++ b/crates/store/src/backend/mysql/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mysql_async::{prelude::Queryable, Params, Row};
 
diff --git a/crates/store/src/backend/mysql/main.rs b/crates/store/src/backend/mysql/main.rs
index 4d9c893aa..078e9feb6 100644
--- a/crates/store/src/backend/mysql/main.rs
+++ b/crates/store/src/backend/mysql/main.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/store/src/backend/mysql/mod.rs b/crates/store/src/backend/mysql/mod.rs
index 5b9b028d5..408a3c308 100644
--- a/crates/store/src/backend/mysql/mod.rs
+++ b/crates/store/src/backend/mysql/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mysql_async::Pool;
 
diff --git a/crates/store/src/backend/mysql/read.rs b/crates/store/src/backend/mysql/read.rs
index e67629275..d5f3b6473 100644
--- a/crates/store/src/backend/mysql/read.rs
+++ b/crates/store/src/backend/mysql/read.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use futures::TryStreamExt;
 use mysql_async::{prelude::Queryable, Row};
diff --git a/crates/store/src/backend/mysql/write.rs b/crates/store/src/backend/mysql/write.rs
index 13e12bf78..3be983bbd 100644
--- a/crates/store/src/backend/mysql/write.rs
+++ b/crates/store/src/backend/mysql/write.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/crates/store/src/backend/postgres/blob.rs b/crates/store/src/backend/postgres/blob.rs
index 924900527..474d6ddcf 100644
--- a/crates/store/src/backend/postgres/blob.rs
+++ b/crates/store/src/backend/postgres/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::ops::Range;
 
diff --git a/crates/store/src/backend/postgres/lookup.rs b/crates/store/src/backend/postgres/lookup.rs
index cce2dda9a..a59770dd8 100644
--- a/crates/store/src/backend/postgres/lookup.rs
+++ b/crates/store/src/backend/postgres/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{QueryResult, QueryType};
 
diff --git a/crates/store/src/backend/postgres/main.rs b/crates/store/src/backend/postgres/main.rs
index f85d7fccd..11afef0e7 100644
--- a/crates/store/src/backend/postgres/main.rs
+++ b/crates/store/src/backend/postgres/main.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/store/src/backend/postgres/mod.rs b/crates/store/src/backend/postgres/mod.rs
index 42d85c571..f812b77d1 100644
--- a/crates/store/src/backend/postgres/mod.rs
+++ b/crates/store/src/backend/postgres/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use deadpool_postgres::{Pool, PoolError};
 
diff --git a/crates/store/src/backend/postgres/read.rs b/crates/store/src/backend/postgres/read.rs
index 883fd1c53..6324d71e5 100644
--- a/crates/store/src/backend/postgres/read.rs
+++ b/crates/store/src/backend/postgres/read.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use futures::{pin_mut, TryStreamExt};
 use roaring::RoaringBitmap;
diff --git a/crates/store/src/backend/postgres/tls.rs b/crates/store/src/backend/postgres/tls.rs
index e723865bd..c09267bf1 100644
--- a/crates/store/src/backend/postgres/tls.rs
+++ b/crates/store/src/backend/postgres/tls.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 // Credits: https://github.com/jbg/tokio-postgres-rustls
 
diff --git a/crates/store/src/backend/postgres/write.rs b/crates/store/src/backend/postgres/write.rs
index c5189081a..2c365a345 100644
--- a/crates/store/src/backend/postgres/write.rs
+++ b/crates/store/src/backend/postgres/write.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/crates/store/src/backend/redis/lookup.rs b/crates/store/src/backend/redis/lookup.rs
index 814fcd52a..bf9a68d78 100644
--- a/crates/store/src/backend/redis/lookup.rs
+++ b/crates/store/src/backend/redis/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use redis::AsyncCommands;
 
diff --git a/crates/store/src/backend/redis/mod.rs b/crates/store/src/backend/redis/mod.rs
index 607b827af..343566767 100644
--- a/crates/store/src/backend/redis/mod.rs
+++ b/crates/store/src/backend/redis/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/store/src/backend/redis/pool.rs b/crates/store/src/backend/redis/pool.rs
index 041a88018..3c8a227ea 100644
--- a/crates/store/src/backend/redis/pool.rs
+++ b/crates/store/src/backend/redis/pool.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use deadpool::managed;
 use redis::{
diff --git a/crates/store/src/backend/rocksdb/blob.rs b/crates/store/src/backend/rocksdb/blob.rs
index c9177e544..0ac348a83 100644
--- a/crates/store/src/backend/rocksdb/blob.rs
+++ b/crates/store/src/backend/rocksdb/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::ops::Range;
 
diff --git a/crates/store/src/backend/rocksdb/main.rs b/crates/store/src/backend/rocksdb/main.rs
index a2828229f..88848a08c 100644
--- a/crates/store/src/backend/rocksdb/main.rs
+++ b/crates/store/src/backend/rocksdb/main.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::path::PathBuf;
 
diff --git a/crates/store/src/backend/rocksdb/mod.rs b/crates/store/src/backend/rocksdb/mod.rs
index af02bb91e..17e93ecb3 100644
--- a/crates/store/src/backend/rocksdb/mod.rs
+++ b/crates/store/src/backend/rocksdb/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/store/src/backend/rocksdb/read.rs b/crates/store/src/backend/rocksdb/read.rs
index 4d2967298..cf377b8f3 100644
--- a/crates/store/src/backend/rocksdb/read.rs
+++ b/crates/store/src/backend/rocksdb/read.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use roaring::RoaringBitmap;
 use rocksdb::{Direction, IteratorMode};
diff --git a/crates/store/src/backend/rocksdb/write.rs b/crates/store/src/backend/rocksdb/write.rs
index 6a32f8157..5fbaf13d1 100644
--- a/crates/store/src/backend/rocksdb/write.rs
+++ b/crates/store/src/backend/rocksdb/write.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     sync::Arc,
diff --git a/crates/store/src/backend/s3/mod.rs b/crates/store/src/backend/s3/mod.rs
index b677559c6..cbcdc9dd9 100644
--- a/crates/store/src/backend/s3/mod.rs
+++ b/crates/store/src/backend/s3/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{io::Write, ops::Range, time::Duration};
 
diff --git a/crates/store/src/backend/sqlite/blob.rs b/crates/store/src/backend/sqlite/blob.rs
index 1506724dc..3f2ee84c4 100644
--- a/crates/store/src/backend/sqlite/blob.rs
+++ b/crates/store/src/backend/sqlite/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::ops::Range;
 
diff --git a/crates/store/src/backend/sqlite/lookup.rs b/crates/store/src/backend/sqlite/lookup.rs
index 379bca02c..dc4490d73 100644
--- a/crates/store/src/backend/sqlite/lookup.rs
+++ b/crates/store/src/backend/sqlite/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use rusqlite::{types::FromSql, Row, Rows, ToSql};
 
diff --git a/crates/store/src/backend/sqlite/main.rs b/crates/store/src/backend/sqlite/main.rs
index 49732bb76..7fefaaed5 100644
--- a/crates/store/src/backend/sqlite/main.rs
+++ b/crates/store/src/backend/sqlite/main.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use r2d2::Pool;
 use tokio::sync::oneshot;
diff --git a/crates/store/src/backend/sqlite/mod.rs b/crates/store/src/backend/sqlite/mod.rs
index c4de6d10c..ad3a06b32 100644
--- a/crates/store/src/backend/sqlite/mod.rs
+++ b/crates/store/src/backend/sqlite/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use r2d2::Pool;
 
diff --git a/crates/store/src/backend/sqlite/pool.rs b/crates/store/src/backend/sqlite/pool.rs
index 481e93fec..963c32376 100644
--- a/crates/store/src/backend/sqlite/pool.rs
+++ b/crates/store/src/backend/sqlite/pool.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use rusqlite::{Connection, Error, OpenFlags};
 use std::fmt;
diff --git a/crates/store/src/backend/sqlite/read.rs b/crates/store/src/backend/sqlite/read.rs
index 029ea049a..104ed76db 100644
--- a/crates/store/src/backend/sqlite/read.rs
+++ b/crates/store/src/backend/sqlite/read.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use roaring::RoaringBitmap;
 use rusqlite::OptionalExtension;
diff --git a/crates/store/src/backend/sqlite/write.rs b/crates/store/src/backend/sqlite/write.rs
index ff7cecf8d..6e2586c1d 100644
--- a/crates/store/src/backend/sqlite/write.rs
+++ b/crates/store/src/backend/sqlite/write.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use roaring::RoaringBitmap;
 use rusqlite::{params, OptionalExtension, TransactionBehavior};
diff --git a/crates/store/src/config.rs b/crates/store/src/config.rs
index d84d3f544..d8c40153e 100644
--- a/crates/store/src/config.rs
+++ b/crates/store/src/config.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/store/src/dispatch/blob.rs b/crates/store/src/dispatch/blob.rs
index 06d941218..4ea58d650 100644
--- a/crates/store/src/dispatch/blob.rs
+++ b/crates/store/src/dispatch/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, ops::Range};
 
diff --git a/crates/store/src/dispatch/fts.rs b/crates/store/src/dispatch/fts.rs
index 24a5ad22d..4eb010c2a 100644
--- a/crates/store/src/dispatch/fts.rs
+++ b/crates/store/src/dispatch/fts.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/store/src/dispatch/lookup.rs b/crates/store/src/dispatch/lookup.rs
index 95d965c09..93467b61a 100644
--- a/crates/store/src/dispatch/lookup.rs
+++ b/crates/store/src/dispatch/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::config::Rate;
 
diff --git a/crates/store/src/dispatch/mod.rs b/crates/store/src/dispatch/mod.rs
index 6b9530762..efd03b53d 100644
--- a/crates/store/src/dispatch/mod.rs
+++ b/crates/store/src/dispatch/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use roaring::RoaringBitmap;
 
diff --git a/crates/store/src/dispatch/store.rs b/crates/store/src/dispatch/store.rs
index 43d7cc180..ee5f56230 100644
--- a/crates/store/src/dispatch/store.rs
+++ b/crates/store/src/dispatch/store.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::ops::{BitAndAssign, Range};
 
diff --git a/crates/store/src/fts/index.rs b/crates/store/src/fts/index.rs
index 8a178837d..8e0edc20d 100644
--- a/crates/store/src/fts/index.rs
+++ b/crates/store/src/fts/index.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, fmt::Display};
 
diff --git a/crates/store/src/fts/mod.rs b/crates/store/src/fts/mod.rs
index 80871a189..c38767d99 100644
--- a/crates/store/src/fts/mod.rs
+++ b/crates/store/src/fts/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/store/src/fts/pdf.rs b/crates/store/src/fts/pdf.rs
index 85386ff63..3f2f752da 100644
--- a/crates/store/src/fts/pdf.rs
+++ b/crates/store/src/fts/pdf.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::panic;
 
diff --git a/crates/store/src/fts/postings.rs b/crates/store/src/fts/postings.rs
index 28af5b46c..fa4ba3941 100644
--- a/crates/store/src/fts/postings.rs
+++ b/crates/store/src/fts/postings.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::cmp::Ordering;
 
diff --git a/crates/store/src/fts/query.rs b/crates/store/src/fts/query.rs
index f1f55c50b..7b24c02aa 100644
--- a/crates/store/src/fts/query.rs
+++ b/crates/store/src/fts/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     fmt::Display,
diff --git a/crates/store/src/lib.rs b/crates/store/src/lib.rs
index 3f602b253..ea93ed9e1 100644
--- a/crates/store/src/lib.rs
+++ b/crates/store/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, fmt::Display, sync::Arc};
 
diff --git a/crates/store/src/query/acl.rs b/crates/store/src/query/acl.rs
index 09404c414..ca94a5848 100644
--- a/crates/store/src/query/acl.rs
+++ b/crates/store/src/query/acl.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{
     write::{key::DeserializeBigEndian, BatchBuilder, Operation, ValueClass, ValueOp},
diff --git a/crates/store/src/query/filter.rs b/crates/store/src/query/filter.rs
index a260dafb0..9a30e00bc 100644
--- a/crates/store/src/query/filter.rs
+++ b/crates/store/src/query/filter.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::ops::{BitAndAssign, BitOrAssign, BitXorAssign};
 
diff --git a/crates/store/src/query/log.rs b/crates/store/src/query/log.rs
index 750bc08c4..5439aaa94 100644
--- a/crates/store/src/query/log.rs
+++ b/crates/store/src/query/log.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use utils::codec::leb128::Leb128Iterator;
 
diff --git a/crates/store/src/query/mod.rs b/crates/store/src/query/mod.rs
index b62faeed8..9a9822f14 100644
--- a/crates/store/src/query/mod.rs
+++ b/crates/store/src/query/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod acl;
 pub mod filter;
diff --git a/crates/store/src/query/sort.rs b/crates/store/src/query/sort.rs
index ed21e042b..7432609dd 100644
--- a/crates/store/src/query/sort.rs
+++ b/crates/store/src/query/sort.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::cmp::Ordering;
 
diff --git a/crates/store/src/write/assert.rs b/crates/store/src/write/assert.rs
index e9ba03b51..d48848cd6 100644
--- a/crates/store/src/write/assert.rs
+++ b/crates/store/src/write/assert.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::{Deserialize, U32_LEN, U64_LEN};
 
diff --git a/crates/store/src/write/batch.rs b/crates/store/src/write/batch.rs
index c3b68fe52..0587fa899 100644
--- a/crates/store/src/write/batch.rs
+++ b/crates/store/src/write/batch.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use super::{
     assert::ToAssertValue, Batch, BatchBuilder, BitmapClass, HasFlag, IntoOperations,
diff --git a/crates/store/src/write/blob.rs b/crates/store/src/write/blob.rs
index bd3600dce..4462fa2fc 100644
--- a/crates/store/src/write/blob.rs
+++ b/crates/store/src/write/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashSet;
 use utils::{BlobHash, BLOB_HASH_LEN};
diff --git a/crates/store/src/write/hash.rs b/crates/store/src/write/hash.rs
index c429fe71f..6164948d5 100644
--- a/crates/store/src/write/hash.rs
+++ b/crates/store/src/write/hash.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::backend::MAX_TOKEN_LENGTH;
 
diff --git a/crates/store/src/write/key.rs b/crates/store/src/write/key.rs
index 470dfb855..1165f90ba 100644
--- a/crates/store/src/write/key.rs
+++ b/crates/store/src/write/key.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::convert::TryInto;
 use utils::{codec::leb128::Leb128_, BLOB_HASH_LEN};
diff --git a/crates/store/src/write/log.rs b/crates/store/src/write/log.rs
index c3edd31bd..5440c6c37 100644
--- a/crates/store/src/write/log.rs
+++ b/crates/store/src/write/log.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashSet;
 use utils::{codec::leb128::Leb128Vec, map::vec_map::VecMap};
diff --git a/crates/store/src/write/mod.rs b/crates/store/src/write/mod.rs
index ef56b1fa6..cb901b694 100644
--- a/crates/store/src/write/mod.rs
+++ b/crates/store/src/write/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     borrow::Cow,
diff --git a/crates/store/src/write/purge.rs b/crates/store/src/write/purge.rs
index 1653613f2..e313acc80 100644
--- a/crates/store/src/write/purge.rs
+++ b/crates/store/src/write/purge.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Display;
 
diff --git a/crates/utils/src/codec/base32_custom.rs b/crates/utils/src/codec/base32_custom.rs
index d9cba4744..b6609b4a2 100644
--- a/crates/utils/src/codec/base32_custom.rs
+++ b/crates/utils/src/codec/base32_custom.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{io::Write, slice::Iter};
 
diff --git a/crates/utils/src/codec/leb128.rs b/crates/utils/src/codec/leb128.rs
index 4ac637e1d..6a17e1f04 100644
--- a/crates/utils/src/codec/leb128.rs
+++ b/crates/utils/src/codec/leb128.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 #![allow(dead_code)]
 
diff --git a/crates/utils/src/codec/mod.rs b/crates/utils/src/codec/mod.rs
index 66c3305cc..715fb40b0 100644
--- a/crates/utils/src/codec/mod.rs
+++ b/crates/utils/src/codec/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod base32_custom;
 pub mod leb128;
diff --git a/crates/utils/src/config/cron.rs b/crates/utils/src/config/cron.rs
index 66ff3ebea..9edf8c18e 100644
--- a/crates/utils/src/config/cron.rs
+++ b/crates/utils/src/config/cron.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/crates/utils/src/config/ipmask.rs b/crates/utils/src/config/ipmask.rs
index fc5245988..bb0c80acb 100644
--- a/crates/utils/src/config/ipmask.rs
+++ b/crates/utils/src/config/ipmask.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr};
 
diff --git a/crates/utils/src/config/mod.rs b/crates/utils/src/config/mod.rs
index 9b779f00b..5a2155270 100644
--- a/crates/utils/src/config/mod.rs
+++ b/crates/utils/src/config/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod cron;
 pub mod ipmask;
diff --git a/crates/utils/src/config/parser.rs b/crates/utils/src/config/parser.rs
index a6d9782cf..0f618005f 100644
--- a/crates/utils/src/config/parser.rs
+++ b/crates/utils/src/config/parser.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::{btree_map::Entry, BTreeMap},
diff --git a/crates/utils/src/config/utils.rs b/crates/utils/src/config/utils.rs
index d36085918..125dae58b 100644
--- a/crates/utils/src/config/utils.rs
+++ b/crates/utils/src/config/utils.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     net::{IpAddr, Ipv4Addr, Ipv6Addr},
diff --git a/crates/utils/src/glob.rs b/crates/utils/src/glob.rs
index 513599e43..668fb21e3 100644
--- a/crates/utils/src/glob.rs
+++ b/crates/utils/src/glob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Sieve Interpreter.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct GlobPattern {
diff --git a/crates/utils/src/lib.rs b/crates/utils/src/lib.rs
index 6323814a9..35359d7ac 100644
--- a/crates/utils/src/lib.rs
+++ b/crates/utils/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/crates/utils/src/lru_cache.rs b/crates/utils/src/lru_cache.rs
index c6fcfafc1..152504042 100644
--- a/crates/utils/src/lru_cache.rs
+++ b/crates/utils/src/lru_cache.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Borrow, hash::Hash};
 
diff --git a/crates/utils/src/map/bitmap.rs b/crates/utils/src/map/bitmap.rs
index 3cf6e2cbd..0759df741 100644
--- a/crates/utils/src/map/bitmap.rs
+++ b/crates/utils/src/map/bitmap.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::ops::Deref;
 
diff --git a/crates/utils/src/map/mod.rs b/crates/utils/src/map/mod.rs
index 67d1917f7..88094be6b 100644
--- a/crates/utils/src/map/mod.rs
+++ b/crates/utils/src/map/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod bitmap;
 pub mod mutex_map;
diff --git a/crates/utils/src/map/mutex_map.rs b/crates/utils/src/map/mutex_map.rs
index ffabf2877..653917f7c 100644
--- a/crates/utils/src/map/mutex_map.rs
+++ b/crates/utils/src/map/mutex_map.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart JMAP Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use core::hash::Hash;
 use std::hash::Hasher;
diff --git a/crates/utils/src/map/ttl_dashmap.rs b/crates/utils/src/map/ttl_dashmap.rs
index c70930cd8..7cdec7831 100644
--- a/crates/utils/src/map/ttl_dashmap.rs
+++ b/crates/utils/src/map/ttl_dashmap.rs
@@ -1,11 +1,7 @@
 /*
- * Copyright (c) 2020-2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
- * https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
- * <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
- * option. This file may not be copied, modified, or distributed
- * except according to those terms.
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
  */
 
 use std::{borrow::Borrow, hash::Hash, time::Instant};
diff --git a/crates/utils/src/map/vec_map.rs b/crates/utils/src/map/vec_map.rs
index 866412510..d39087c9c 100644
--- a/crates/utils/src/map/vec_map.rs
+++ b/crates/utils/src/map/vec_map.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Borrow, fmt};
 
diff --git a/crates/utils/src/snowflake.rs b/crates/utils/src/snowflake.rs
index 67e388636..70475a7cd 100644
--- a/crates/utils/src/snowflake.rs
+++ b/crates/utils/src/snowflake.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     sync::atomic::{AtomicU64, Ordering},
diff --git a/crates/utils/src/suffixlist.rs b/crates/utils/src/suffixlist.rs
index 5a687035b..e0921abe3 100644
--- a/crates/utils/src/suffixlist.rs
+++ b/crates/utils/src/suffixlist.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::io::Read;
 
diff --git a/crates/utils/src/url_params.rs b/crates/utils/src/url_params.rs
index 6588914d3..c0a7bb9e7 100644
--- a/crates/utils/src/url_params.rs
+++ b/crates/utils/src/url_params.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, collections::HashMap};
 
diff --git a/install.sh b/install.sh
index 8bc9edc8d..aba0bb49a 100644
--- a/install.sh
+++ b/install.sh
@@ -1,6 +1,12 @@
 #!/usr/bin/env sh
 # shellcheck shell=dash
 
+#
+# SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+#
+# SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+#
+
 # Stalwart Mail Server install script -- based on the rustup installation script.
 
 set -e
diff --git a/resources/config/build.py b/resources/config/build.py
index 7bb9ed0b0..a1d358070 100644
--- a/resources/config/build.py
+++ b/resources/config/build.py
@@ -1,3 +1,9 @@
+#
+# SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
+#
+# SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+#
+
 import os
 
 # Define the scripts and their component files
diff --git a/tests/src/directory/imap.rs b/tests/src/directory/imap.rs
index eadba5bae..2d55e3e94 100644
--- a/tests/src/directory/imap.rs
+++ b/tests/src/directory/imap.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/tests/src/directory/internal.rs b/tests/src/directory/internal.rs
index fb6698418..2d42cf313 100644
--- a/tests/src/directory/internal.rs
+++ b/tests/src/directory/internal.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashSet;
 use directory::{
diff --git a/tests/src/directory/ldap.rs b/tests/src/directory/ldap.rs
index 770c0797b..a7fefaa83 100644
--- a/tests/src/directory/ldap.rs
+++ b/tests/src/directory/ldap.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fmt::Debug;
 
diff --git a/tests/src/directory/mod.rs b/tests/src/directory/mod.rs
index 4f9a4d23f..d6efc3e22 100644
--- a/tests/src/directory/mod.rs
+++ b/tests/src/directory/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod imap;
 pub mod internal;
diff --git a/tests/src/directory/smtp.rs b/tests/src/directory/smtp.rs
index b2b130c62..07b1a8a65 100644
--- a/tests/src/directory/smtp.rs
+++ b/tests/src/directory/smtp.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/tests/src/directory/sql.rs b/tests/src/directory/sql.rs
index acc6c1b9a..9bc69dc0a 100644
--- a/tests/src/directory/sql.rs
+++ b/tests/src/directory/sql.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use directory::{backend::internal::manage::ManageDirectory, Principal, QueryBy, Type};
 use mail_send::Credentials;
diff --git a/tests/src/imap/acl.rs b/tests/src/imap/acl.rs
index 3ab547f7d..156ba1f3d 100644
--- a/tests/src/imap/acl.rs
+++ b/tests/src/imap/acl.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::ResponseType;
 
diff --git a/tests/src/imap/append.rs b/tests/src/imap/append.rs
index 358b353fa..1a4c60d06 100644
--- a/tests/src/imap/append.rs
+++ b/tests/src/imap/append.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fs, io};
 
diff --git a/tests/src/imap/basic.rs b/tests/src/imap/basic.rs
index 1bbfec19f..acaedb86f 100644
--- a/tests/src/imap/basic.rs
+++ b/tests/src/imap/basic.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap::op::authenticate::decode_challenge_oauth;
 use imap_proto::ResponseType;
diff --git a/tests/src/imap/body_structure.rs b/tests/src/imap/body_structure.rs
index 2ce32b36d..b9363b818 100644
--- a/tests/src/imap/body_structure.rs
+++ b/tests/src/imap/body_structure.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::fs;
 
diff --git a/tests/src/imap/condstore.rs b/tests/src/imap/condstore.rs
index d8146022a..244b31bc3 100644
--- a/tests/src/imap/condstore.rs
+++ b/tests/src/imap/condstore.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::ResponseType;
 
diff --git a/tests/src/imap/copy_move.rs b/tests/src/imap/copy_move.rs
index 9b3ccbf07..b990c3d5b 100644
--- a/tests/src/imap/copy_move.rs
+++ b/tests/src/imap/copy_move.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::ResponseType;
 
diff --git a/tests/src/imap/fetch.rs b/tests/src/imap/fetch.rs
index f5c6fe484..86b3da6fe 100644
--- a/tests/src/imap/fetch.rs
+++ b/tests/src/imap/fetch.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::ResponseType;
 
diff --git a/tests/src/imap/idle.rs b/tests/src/imap/idle.rs
index 21b730075..47828561c 100644
--- a/tests/src/imap/idle.rs
+++ b/tests/src/imap/idle.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::ResponseType;
 
diff --git a/tests/src/imap/mailbox.rs b/tests/src/imap/mailbox.rs
index 845177749..ded1b2be9 100644
--- a/tests/src/imap/mailbox.rs
+++ b/tests/src/imap/mailbox.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap::op::list::matches_pattern;
 use imap_proto::ResponseType;
diff --git a/tests/src/imap/managesieve.rs b/tests/src/imap/managesieve.rs
index ed3fcf48b..31a1534c0 100644
--- a/tests/src/imap/managesieve.rs
+++ b/tests/src/imap/managesieve.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/tests/src/imap/mod.rs b/tests/src/imap/mod.rs
index c83163225..b3ba31c48 100644
--- a/tests/src/imap/mod.rs
+++ b/tests/src/imap/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod acl;
 pub mod append;
diff --git a/tests/src/imap/pop.rs b/tests/src/imap/pop.rs
index e8cd9fa20..489b407e8 100644
--- a/tests/src/imap/pop.rs
+++ b/tests/src/imap/pop.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use mail_send::smtp::tls::build_tls_connector;
 use rustls_pki_types::ServerName;
diff --git a/tests/src/imap/search.rs b/tests/src/imap/search.rs
index b1bfd12a3..8de789e5a 100644
--- a/tests/src/imap/search.rs
+++ b/tests/src/imap/search.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::ResponseType;
 
diff --git a/tests/src/imap/store.rs b/tests/src/imap/store.rs
index bc0fd6e63..31e0f73ba 100644
--- a/tests/src/imap/store.rs
+++ b/tests/src/imap/store.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::ResponseType;
 
diff --git a/tests/src/imap/thread.rs b/tests/src/imap/thread.rs
index cf0436555..87559147d 100644
--- a/tests/src/imap/thread.rs
+++ b/tests/src/imap/thread.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2020-2022, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use imap_proto::ResponseType;
 
diff --git a/tests/src/jmap/auth_acl.rs b/tests/src/jmap/auth_acl.rs
index d687535c5..19d169dda 100644
--- a/tests/src/jmap/auth_acl.rs
+++ b/tests/src/jmap/auth_acl.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use directory::backend::internal::manage::ManageDirectory;
 use jmap::mailbox::{INBOX_ID, TRASH_ID};
diff --git a/tests/src/jmap/auth_limits.rs b/tests/src/jmap/auth_limits.rs
index 977414b62..d96231d91 100644
--- a/tests/src/jmap/auth_limits.rs
+++ b/tests/src/jmap/auth_limits.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     net::{IpAddr, Ipv4Addr},
diff --git a/tests/src/jmap/auth_oauth.rs b/tests/src/jmap/auth_oauth.rs
index 337c99d64..8f3c7e516 100644
--- a/tests/src/jmap/auth_oauth.rs
+++ b/tests/src/jmap/auth_oauth.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/jmap/blob.rs b/tests/src/jmap/blob.rs
index b9c340425..5121be12c 100644
--- a/tests/src/jmap/blob.rs
+++ b/tests/src/jmap/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use directory::backend::internal::manage::ManageDirectory;
 use jmap::mailbox::INBOX_ID;
diff --git a/tests/src/jmap/crypto.rs b/tests/src/jmap/crypto.rs
index 52b972eac..8e435b03a 100644
--- a/tests/src/jmap/crypto.rs
+++ b/tests/src/jmap/crypto.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::path::PathBuf;
 
diff --git a/tests/src/jmap/delivery.rs b/tests/src/jmap/delivery.rs
index 3cb267e02..ebf9527b0 100644
--- a/tests/src/jmap/delivery.rs
+++ b/tests/src/jmap/delivery.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/tests/src/jmap/email_changes.rs b/tests/src/jmap/email_changes.rs
index 409f2df62..10702cd8e 100644
--- a/tests/src/jmap/email_changes.rs
+++ b/tests/src/jmap/email_changes.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_proto::{
     parser::{json::Parser, JsonObjectParser},
diff --git a/tests/src/jmap/email_copy.rs b/tests/src/jmap/email_copy.rs
index 84d3a99e0..dae358038 100644
--- a/tests/src/jmap/email_copy.rs
+++ b/tests/src/jmap/email_copy.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_client::mailbox::Role;
 use jmap_proto::types::id::Id;
diff --git a/tests/src/jmap/email_get.rs b/tests/src/jmap/email_get.rs
index c10653b83..54bbfd48f 100644
--- a/tests/src/jmap/email_get.rs
+++ b/tests/src/jmap/email_get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fs, path::PathBuf};
 
diff --git a/tests/src/jmap/email_parse.rs b/tests/src/jmap/email_parse.rs
index ecd829ade..5f2534c28 100644
--- a/tests/src/jmap/email_parse.rs
+++ b/tests/src/jmap/email_parse.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fs, path::PathBuf};
 
diff --git a/tests/src/jmap/email_query.rs b/tests/src/jmap/email_query.rs
index 72f886961..4e982d6cd 100644
--- a/tests/src/jmap/email_query.rs
+++ b/tests/src/jmap/email_query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{collections::hash_map::Entry, time::Instant};
 
diff --git a/tests/src/jmap/email_query_changes.rs b/tests/src/jmap/email_query_changes.rs
index e8c18c5e8..ab2862373 100644
--- a/tests/src/jmap/email_query_changes.rs
+++ b/tests/src/jmap/email_query_changes.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_client::{
     core::query::{Comparator, Filter},
diff --git a/tests/src/jmap/email_search_snippet.rs b/tests/src/jmap/email_search_snippet.rs
index f3b88e4da..7c68d788b 100644
--- a/tests/src/jmap/email_search_snippet.rs
+++ b/tests/src/jmap/email_search_snippet.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fs, path::PathBuf};
 
diff --git a/tests/src/jmap/email_set.rs b/tests/src/jmap/email_set.rs
index ac0ffa063..65ee1af2b 100644
--- a/tests/src/jmap/email_set.rs
+++ b/tests/src/jmap/email_set.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fs, path::PathBuf};
 
diff --git a/tests/src/jmap/email_submission.rs b/tests/src/jmap/email_submission.rs
index ebced5753..af1eb3d7e 100644
--- a/tests/src/jmap/email_submission.rs
+++ b/tests/src/jmap/email_submission.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashMap;
 use directory::backend::internal::manage::ManageDirectory;
diff --git a/tests/src/jmap/event_source.rs b/tests/src/jmap/event_source.rs
index 8f550a8cc..5885260d5 100644
--- a/tests/src/jmap/event_source.rs
+++ b/tests/src/jmap/event_source.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/tests/src/jmap/mailbox.rs b/tests/src/jmap/mailbox.rs
index 49705f185..87cbb2747 100644
--- a/tests/src/jmap/mailbox.rs
+++ b/tests/src/jmap/mailbox.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use jmap_client::{
     client::Client,
diff --git a/tests/src/jmap/mod.rs b/tests/src/jmap/mod.rs
index f406c6adc..72eac6594 100644
--- a/tests/src/jmap/mod.rs
+++ b/tests/src/jmap/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{path::PathBuf, sync::Arc, time::Duration};
 
diff --git a/tests/src/jmap/purge.rs b/tests/src/jmap/purge.rs
index c37e028f7..464e443b9 100644
--- a/tests/src/jmap/purge.rs
+++ b/tests/src/jmap/purge.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashSet;
 use directory::backend::internal::manage::ManageDirectory;
diff --git a/tests/src/jmap/push_subscription.rs b/tests/src/jmap/push_subscription.rs
index 1d41f1760..c205e0870 100644
--- a/tests/src/jmap/push_subscription.rs
+++ b/tests/src/jmap/push_subscription.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     sync::{
diff --git a/tests/src/jmap/quota.rs b/tests/src/jmap/quota.rs
index ed879429c..2e2a2a582 100644
--- a/tests/src/jmap/quota.rs
+++ b/tests/src/jmap/quota.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::jmap::{
     assert_is_empty, delivery::SmtpConnection, emails_purge_tombstoned, jmap_raw_request,
diff --git a/tests/src/jmap/sieve_script.rs b/tests/src/jmap/sieve_script.rs
index 7413e1a2c..82f4bcb16 100644
--- a/tests/src/jmap/sieve_script.rs
+++ b/tests/src/jmap/sieve_script.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use directory::backend::internal::manage::ManageDirectory;
 use jmap_client::{
diff --git a/tests/src/jmap/stress_test.rs b/tests/src/jmap/stress_test.rs
index dad78d87e..771e8b6fe 100644
--- a/tests/src/jmap/stress_test.rs
+++ b/tests/src/jmap/stress_test.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{sync::Arc, time::Duration};
 
diff --git a/tests/src/jmap/thread_get.rs b/tests/src/jmap/thread_get.rs
index 6a89ffc57..8019fe014 100644
--- a/tests/src/jmap/thread_get.rs
+++ b/tests/src/jmap/thread_get.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use crate::jmap::{assert_is_empty, mailbox::destroy_all_mailboxes};
 use jmap_client::mailbox::Role;
diff --git a/tests/src/jmap/thread_merge.rs b/tests/src/jmap/thread_merge.rs
index b8f06e4ab..cec7dbbd0 100644
--- a/tests/src/jmap/thread_merge.rs
+++ b/tests/src/jmap/thread_merge.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{io::Cursor, time::Duration};
 
diff --git a/tests/src/jmap/vacation_response.rs b/tests/src/jmap/vacation_response.rs
index 7fbbe9b69..60c1bdae4 100644
--- a/tests/src/jmap/vacation_response.rs
+++ b/tests/src/jmap/vacation_response.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use chrono::{TimeDelta, Utc};
 
diff --git a/tests/src/jmap/webhooks.rs b/tests/src/jmap/webhooks.rs
index b55f0b1aa..bffcf98d5 100644
--- a/tests/src/jmap/webhooks.rs
+++ b/tests/src/jmap/webhooks.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     sync::{
diff --git a/tests/src/jmap/websocket.rs b/tests/src/jmap/websocket.rs
index 4b247750d..1b6d21d8c 100644
--- a/tests/src/jmap/websocket.rs
+++ b/tests/src/jmap/websocket.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashSet;
 use directory::backend::internal::manage::ManageDirectory;
diff --git a/tests/src/lib.rs b/tests/src/lib.rs
index 921c6407d..96d3b3bf5 100644
--- a/tests/src/lib.rs
+++ b/tests/src/lib.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::path::PathBuf;
 
diff --git a/tests/src/smtp/config.rs b/tests/src/smtp/config.rs
index d198de889..722e57e25 100644
--- a/tests/src/smtp/config.rs
+++ b/tests/src/smtp/config.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fs, net::IpAddr, path::PathBuf, time::Duration};
 
diff --git a/tests/src/smtp/inbound/auth.rs b/tests/src/smtp/inbound/auth.rs
index a9406319e..c6bf7e225 100644
--- a/tests/src/smtp/inbound/auth.rs
+++ b/tests/src/smtp/inbound/auth.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::Core;
 
diff --git a/tests/src/smtp/inbound/basic.rs b/tests/src/smtp/inbound/basic.rs
index da6b51898..46475232d 100644
--- a/tests/src/smtp/inbound/basic.rs
+++ b/tests/src/smtp/inbound/basic.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::Core;
 use smtp::core::{Inner, Session};
diff --git a/tests/src/smtp/inbound/data.rs b/tests/src/smtp/inbound/data.rs
index 71befe070..4b9c45c55 100644
--- a/tests/src/smtp/inbound/data.rs
+++ b/tests/src/smtp/inbound/data.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::Core;
 use store::Stores;
diff --git a/tests/src/smtp/inbound/dmarc.rs b/tests/src/smtp/inbound/dmarc.rs
index 17bd1bea2..09d1f47da 100644
--- a/tests/src/smtp/inbound/dmarc.rs
+++ b/tests/src/smtp/inbound/dmarc.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/inbound/ehlo.rs b/tests/src/smtp/inbound/ehlo.rs
index 23d6bd792..fe7c76d6e 100644
--- a/tests/src/smtp/inbound/ehlo.rs
+++ b/tests/src/smtp/inbound/ehlo.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/inbound/limits.rs b/tests/src/smtp/inbound/limits.rs
index 0abde2ff4..f0616f636 100644
--- a/tests/src/smtp/inbound/limits.rs
+++ b/tests/src/smtp/inbound/limits.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/inbound/mail.rs b/tests/src/smtp/inbound/mail.rs
index 13b527f91..5d422d079 100644
--- a/tests/src/smtp/inbound/mail.rs
+++ b/tests/src/smtp/inbound/mail.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     sync::Arc,
diff --git a/tests/src/smtp/inbound/milter.rs b/tests/src/smtp/inbound/milter.rs
index de7749d48..38f269b92 100644
--- a/tests/src/smtp/inbound/milter.rs
+++ b/tests/src/smtp/inbound/milter.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fs, net::SocketAddr, path::PathBuf, sync::Arc, time::Duration};
 
diff --git a/tests/src/smtp/inbound/mod.rs b/tests/src/smtp/inbound/mod.rs
index b8ec47acb..96926d898 100644
--- a/tests/src/smtp/inbound/mod.rs
+++ b/tests/src/smtp/inbound/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/tests/src/smtp/inbound/rcpt.rs b/tests/src/smtp/inbound/rcpt.rs
index f079cda4d..9a0d94e16 100644
--- a/tests/src/smtp/inbound/rcpt.rs
+++ b/tests/src/smtp/inbound/rcpt.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/tests/src/smtp/inbound/rewrite.rs b/tests/src/smtp/inbound/rewrite.rs
index eae8ff8af..1efe7efc4 100644
--- a/tests/src/smtp/inbound/rewrite.rs
+++ b/tests/src/smtp/inbound/rewrite.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::Core;
 
diff --git a/tests/src/smtp/inbound/scripts.rs b/tests/src/smtp/inbound/scripts.rs
index 788ed341e..3775ed4a8 100644
--- a/tests/src/smtp/inbound/scripts.rs
+++ b/tests/src/smtp/inbound/scripts.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use core::panic;
 use std::{fmt::Write, fs, path::PathBuf};
diff --git a/tests/src/smtp/inbound/sign.rs b/tests/src/smtp/inbound/sign.rs
index d2a369dcb..ae1760172 100644
--- a/tests/src/smtp/inbound/sign.rs
+++ b/tests/src/smtp/inbound/sign.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/inbound/throttle.rs b/tests/src/smtp/inbound/throttle.rs
index 7555a8221..dca0f454e 100644
--- a/tests/src/smtp/inbound/throttle.rs
+++ b/tests/src/smtp/inbound/throttle.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/tests/src/smtp/inbound/vrfy.rs b/tests/src/smtp/inbound/vrfy.rs
index 7fbf3af96..4dc4f6ed3 100644
--- a/tests/src/smtp/inbound/vrfy.rs
+++ b/tests/src/smtp/inbound/vrfy.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::Core;
 
diff --git a/tests/src/smtp/lookup/mod.rs b/tests/src/smtp/lookup/mod.rs
index 0b0988993..cbaf055e3 100644
--- a/tests/src/smtp/lookup/mod.rs
+++ b/tests/src/smtp/lookup/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod sql;
 pub mod utils;
diff --git a/tests/src/smtp/lookup/sql.rs b/tests/src/smtp/lookup/sql.rs
index e2a9b9018..e97a74537 100644
--- a/tests/src/smtp/lookup/sql.rs
+++ b/tests/src/smtp/lookup/sql.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/lookup/utils.rs b/tests/src/smtp/lookup/utils.rs
index db19774db..6f2a107a6 100644
--- a/tests/src/smtp/lookup/utils.rs
+++ b/tests/src/smtp/lookup/utils.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/management/mod.rs b/tests/src/smtp/management/mod.rs
index 3be5d6c7c..97f937174 100644
--- a/tests/src/smtp/management/mod.rs
+++ b/tests/src/smtp/management/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod queue;
 pub mod report;
diff --git a/tests/src/smtp/management/queue.rs b/tests/src/smtp/management/queue.rs
index fdcc35e35..d808f433e 100644
--- a/tests/src/smtp/management/queue.rs
+++ b/tests/src/smtp/management/queue.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/management/report.rs b/tests/src/smtp/management/report.rs
index 68ae38bf0..fbdca1c4f 100644
--- a/tests/src/smtp/management/report.rs
+++ b/tests/src/smtp/management/report.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/tests/src/smtp/mod.rs b/tests/src/smtp/mod.rs
index b57c50ccf..09d60a332 100644
--- a/tests/src/smtp/mod.rs
+++ b/tests/src/smtp/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{path::PathBuf, sync::Arc};
 
diff --git a/tests/src/smtp/outbound/dane.rs b/tests/src/smtp/outbound/dane.rs
index fac56b5fd..abc691ffe 100644
--- a/tests/src/smtp/outbound/dane.rs
+++ b/tests/src/smtp/outbound/dane.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     collections::BTreeSet,
diff --git a/tests/src/smtp/outbound/extensions.rs b/tests/src/smtp/outbound/extensions.rs
index 317fc0e26..22d39f1fe 100644
--- a/tests/src/smtp/outbound/extensions.rs
+++ b/tests/src/smtp/outbound/extensions.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/outbound/fallback_relay.rs b/tests/src/smtp/outbound/fallback_relay.rs
index 92d5315ef..1d8b08851 100644
--- a/tests/src/smtp/outbound/fallback_relay.rs
+++ b/tests/src/smtp/outbound/fallback_relay.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/outbound/ip_lookup.rs b/tests/src/smtp/outbound/ip_lookup.rs
index c38596e84..db34b4ec5 100644
--- a/tests/src/smtp/outbound/ip_lookup.rs
+++ b/tests/src/smtp/outbound/ip_lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/outbound/lmtp.rs b/tests/src/smtp/outbound/lmtp.rs
index 779740ee0..a854bcc45 100644
--- a/tests/src/smtp/outbound/lmtp.rs
+++ b/tests/src/smtp/outbound/lmtp.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/outbound/mod.rs b/tests/src/smtp/outbound/mod.rs
index 602ee5bc0..43334dbe2 100644
--- a/tests/src/smtp/outbound/mod.rs
+++ b/tests/src/smtp/outbound/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use common::{
     config::server::{ServerProtocol, Servers},
diff --git a/tests/src/smtp/outbound/mta_sts.rs b/tests/src/smtp/outbound/mta_sts.rs
index 45347800e..20a85f659 100644
--- a/tests/src/smtp/outbound/mta_sts.rs
+++ b/tests/src/smtp/outbound/mta_sts.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     sync::Arc,
diff --git a/tests/src/smtp/outbound/smtp.rs b/tests/src/smtp/outbound/smtp.rs
index 0cb39e838..787db8907 100644
--- a/tests/src/smtp/outbound/smtp.rs
+++ b/tests/src/smtp/outbound/smtp.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/outbound/throttle.rs b/tests/src/smtp/outbound/throttle.rs
index b00301994..472110fb6 100644
--- a/tests/src/smtp/outbound/throttle.rs
+++ b/tests/src/smtp/outbound/throttle.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     net::{IpAddr, Ipv4Addr},
diff --git a/tests/src/smtp/outbound/tls.rs b/tests/src/smtp/outbound/tls.rs
index b583125af..b3646f00e 100644
--- a/tests/src/smtp/outbound/tls.rs
+++ b/tests/src/smtp/outbound/tls.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/queue/concurrent.rs b/tests/src/smtp/queue/concurrent.rs
index 980289e31..8bddda007 100644
--- a/tests/src/smtp/queue/concurrent.rs
+++ b/tests/src/smtp/queue/concurrent.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::{Duration, Instant};
 
diff --git a/tests/src/smtp/queue/dsn.rs b/tests/src/smtp/queue/dsn.rs
index d27c7b397..b88abe79b 100644
--- a/tests/src/smtp/queue/dsn.rs
+++ b/tests/src/smtp/queue/dsn.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{fs, path::PathBuf, time::SystemTime};
 
diff --git a/tests/src/smtp/queue/manager.rs b/tests/src/smtp/queue/manager.rs
index c2ce6df32..9c658d0eb 100644
--- a/tests/src/smtp/queue/manager.rs
+++ b/tests/src/smtp/queue/manager.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/tests/src/smtp/queue/mod.rs b/tests/src/smtp/queue/mod.rs
index 259512f61..a2f0d8e08 100644
--- a/tests/src/smtp/queue/mod.rs
+++ b/tests/src/smtp/queue/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod concurrent;
 pub mod dsn;
diff --git a/tests/src/smtp/queue/retry.rs b/tests/src/smtp/queue/retry.rs
index 8be55d76b..ac0f1828f 100644
--- a/tests/src/smtp/queue/retry.rs
+++ b/tests/src/smtp/queue/retry.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/tests/src/smtp/reporting/analyze.rs b/tests/src/smtp/reporting/analyze.rs
index 564eb0d9e..59155ae24 100644
--- a/tests/src/smtp/reporting/analyze.rs
+++ b/tests/src/smtp/reporting/analyze.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/tests/src/smtp/reporting/dmarc.rs b/tests/src/smtp/reporting/dmarc.rs
index 4c117f611..a724e2bac 100644
--- a/tests/src/smtp/reporting/dmarc.rs
+++ b/tests/src/smtp/reporting/dmarc.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     net::IpAddr,
diff --git a/tests/src/smtp/reporting/mod.rs b/tests/src/smtp/reporting/mod.rs
index 60d0384b9..76ceb90ca 100644
--- a/tests/src/smtp/reporting/mod.rs
+++ b/tests/src/smtp/reporting/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod analyze;
 pub mod dmarc;
diff --git a/tests/src/smtp/reporting/scheduler.rs b/tests/src/smtp/reporting/scheduler.rs
index e9406c45b..7a9521041 100644
--- a/tests/src/smtp/reporting/scheduler.rs
+++ b/tests/src/smtp/reporting/scheduler.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::sync::Arc;
 
diff --git a/tests/src/smtp/reporting/tls.rs b/tests/src/smtp/reporting/tls.rs
index 2942d138a..34208b338 100644
--- a/tests/src/smtp/reporting/tls.rs
+++ b/tests/src/smtp/reporting/tls.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{io::Read, sync::Arc, time::Duration};
 
diff --git a/tests/src/smtp/session.rs b/tests/src/smtp/session.rs
index d695260ba..a163427b2 100644
--- a/tests/src/smtp/session.rs
+++ b/tests/src/smtp/session.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{borrow::Cow, path::PathBuf, sync::Arc};
 
diff --git a/tests/src/store/assign_id.rs b/tests/src/store/assign_id.rs
index 3c551c428..8cb86c944 100644
--- a/tests/src/store/assign_id.rs
+++ b/tests/src/store/assign_id.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::collections::HashSet;
 
diff --git a/tests/src/store/blob.rs b/tests/src/store/blob.rs
index a9978a07f..5ebc5a47f 100644
--- a/tests/src/store/blob.rs
+++ b/tests/src/store/blob.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashMap;
 use store::{
diff --git a/tests/src/store/import_export.rs b/tests/src/store/import_export.rs
index b8078e1d4..7123bc189 100644
--- a/tests/src/store/import_export.rs
+++ b/tests/src/store/import_export.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use ahash::AHashSet;
 use common::Core;
diff --git a/tests/src/store/lookup.rs b/tests/src/store/lookup.rs
index 039a4cbc2..09e45b06f 100644
--- a/tests/src/store/lookup.rs
+++ b/tests/src/store/lookup.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::time::Duration;
 
diff --git a/tests/src/store/mod.rs b/tests/src/store/mod.rs
index 28035d63f..503eb1a20 100644
--- a/tests/src/store/mod.rs
+++ b/tests/src/store/mod.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023 Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 pub mod assign_id;
 pub mod blob;
diff --git a/tests/src/store/ops.rs b/tests/src/store/ops.rs
index 279bea811..0e8b34382 100644
--- a/tests/src/store/ops.rs
+++ b/tests/src/store/ops.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::collections::HashSet;
 
diff --git a/tests/src/store/query.rs b/tests/src/store/query.rs
index c65f98dff..ffb4531c4 100644
--- a/tests/src/store/query.rs
+++ b/tests/src/store/query.rs
@@ -1,25 +1,8 @@
 /*
- * Copyright (c) 2023, Stalwart Labs Ltd.
+ * SPDX-FileCopyrightText: 2020 Stalwart Labs Ltd <hello@stalw.art>
  *
- * This file is part of the Stalwart Mail Server.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * in the LICENSE file at the top-level directory of this distribution.
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * You can be released from the requirements of the AGPLv3 license by
- * purchasing a commercial license. Please contact licensing@stalw.art
- * for more details.
-*/
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-SEL
+ */
 
 use std::{
     fmt::Display,