Command line tool to migrate Mailman mbox archives to Google Groups.
sudo pip install -U google-api-python-client
The Google API libraries require some setup, per https://developers.google.com/api-client-library/python/start/get_started.
If the Domain Administrator has already setup the API, the client_secrets.json file is required.
usage: group_migrate.py [-h] [--auth_host_name AUTH_HOST_NAME]
[--noauth_local_webserver]
[--auth_host_port [AUTH_HOST_PORT [AUTH_HOST_PORT ...]]]
[--logging_level {DEBUG,INFO,WARNING,ERROR,CRITICAL}]
-m MAILBOX -g GROUP [-f FAILED] [-v] [-a AFTER]
[-b BEFORE] [-n] [-r RESUME] [-l LABEL]
Utility to migrate an mbox mailbox (from mailman, ideally) to Google Groups
optional arguments:
-h, --help show this help message and exit
--auth_host_name AUTH_HOST_NAME
Hostname when running a local web server.
--noauth_local_webserver
Do not run a local web server.
--auth_host_port [AUTH_HOST_PORT [AUTH_HOST_PORT ...]]
Port web server should listen on.
--logging_level {DEBUG,INFO,WARNING,ERROR,CRITICAL}
Set the logging level of detail.
-m MAILBOX, --mailbox MAILBOX
The mailbox file containing the messages to be
migrated.
-g GROUP, --group GROUP
The email address of the group to receive the migrated
messages.
-f FAILED, --failed FAILED
The mailbox file containing the messages that failed
to be migrated.
-v, --verbose Show progress
-a AFTER, --after AFTER
Only import after date
-b BEFORE, --before BEFORE
Only import before date
-n, --dryrun Dry-run
-r RESUME, --resume RESUME
resume with message #
-l LABEL, --label LABEL
import matching label (X-Gmail-Labels)
It appears that Google will not permit duplicate messages, so this can be rerun safely.