4 links
The Ranma ML
geocities.com
No binaries or fan fiction. E-mail distributed in digest format, either once every hour or once every six hours.
Yahoo! Groups : ranma1-2
groups.yahoo.com
General Ranma mailing list. Open membership, unmoderated, archives for members only, email attachments allowed.
Yahoo! Groups: Ranma Dimension
groups.yahoo.com
General Ranma 1/2 discussions via a mailing list. Open membership, archives viewable by public, chat room.