chuck mailman archive -> google groups (from mailman-users)

mailman2googlegroups

import mailbox
import smtplib

mb = mailbox.mbox('/path/to/mbox', Create=False)  # put actual mbox path
conn = smtplib.SMTP()
conn.connect(...)  # connect to the server that will send the mail
                   # e.g. conn.connect('example.com', 587)
conn.starttls()    # if required
conn.login(...)    # if required
                   # e.g. conn.login('user@example.com', 'password'
for msg in mb:
    conn.sendmail('you@example.com',             # your actual email
                  'your_group@googlegroups.com', # your group's address
                   msg.as_string())
conn.quit()

See https://mail.python.org/pipermail/mailman-users/2014-October/077893.html for more info