diff --git a/README.md b/README.md
index 10963c7..2b9d868 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,8 @@ class Notifier < SendWithUsMailer::Base
             version_name: 'version-A',
             locale: 'en-US',
             files: ["/path/to/file"],
-            headers: { 'header-name' => 'header-value' }
+            headers: { 'header-name' => 'header-value' },
+            tags: ['some-tag']
         )
     end
 end
diff --git a/lib/sendwithus_ruby_action_mailer/mail_params.rb b/lib/sendwithus_ruby_action_mailer/mail_params.rb
index 85e7f51..35cd193 100644
--- a/lib/sendwithus_ruby_action_mailer/mail_params.rb
+++ b/lib/sendwithus_ruby_action_mailer/mail_params.rb
@@ -14,6 +14,7 @@ def initialize #:nodoc:
       @locale = ""
       @files = []
       @headers = {}
+      @tags = []
     end
 
     def assign(key, value) #:nodoc:
@@ -47,6 +48,8 @@ def merge!(params={}) #:nodoc:
           @files.concat(value)
         when :headers
           @headers.merge!(value)
+        when :tags
+          @tags.concat(value)
         end
       end
     end
@@ -69,7 +72,8 @@ def deliver
         version_name: @version_name,
         locale: @locale,
         files: @files,
-        headers: @headers
+        headers: @headers,
+        tags: @tags
       )
     end
   end
diff --git a/test/lib/sendwithus_ruby_action_mailer/integration_test.rb b/test/lib/sendwithus_ruby_action_mailer/integration_test.rb
index 647da58..b950258 100644
--- a/test/lib/sendwithus_ruby_action_mailer/integration_test.rb
+++ b/test/lib/sendwithus_ruby_action_mailer/integration_test.rb
@@ -29,7 +29,8 @@ def example_email
              from_name: 'asender',
              reply_to: 'ano-reply@company.com',
              version_name: 'v2',
-             headers: { 'header-name' => 'header-value' }
+             headers: { 'header-name' => 'header-value' },
+             tags: ['some-tag']
       end
     end