Mailing Lists
We generally discuss SpamAssassin and its development via the following mailing lists. Where available, there is a graph which shows you how much mail you should expect to hit your inbox if you subscribe.
Announce
For announcements of new versions of SpamAssassin.
- Subscription: send mail to announce-subscribe at spamassassin.apache.org
Archives: [http://mail-archives.apache.org/mod_mbox/spamassassin-announce/ Apache] [http://marc.theaimsgroup.com/?l=spamassassin-announce&r=1&w=2 MARC] [http://www.nabble.com/SpamAssassin-f191.html Nabble] [http://www.gossamer-threads.com/lists/spamassassin/announce/ Gossamer]
[http://gmane.org/plot-rate.php/plot.png?group=gmane.mail.spam.spamassassin.announce&plot.png]
Users
A general user list.
Note: before you submit a question to the mailing list, please thoroughly read the FrequentlyAskedQuestions list and other info on the FrontPage, as your question is likely already answered there. If you've looked carefully but still can't find your answer, then go ahead and post – but be sure to note
- how you're invoking SpamAssassin (options are in UsingSpamAssassin),
- what version of SpamAssassin you're using, and
- your platform.
Please don't ask questions about versions older than 2.64 and 3.0.0, as you don't want to use an old version for the same reason you wouldn't use an out-of-date anti-virus scanner.
- Subscription: send mail to users-subscribe at spamassassin.apache.org
Archives: [http://mail-archives.apache.org/mod_mbox/spamassassin-users/ Apache] [http://news.gmane.org/thread.php?group=gmane.mail.spam.spamassassin.general GMANE] [http://marc.theaimsgroup.com/?l=spamassassin-users&r=1&w=2 MARC] [http://www.nabble.com/SpamAssassin-f191.html Nabble] [http://www.gossamer-threads.com/lists/spamassassin/users/ Gossamer]
Search: [http://search.gmane.org/search.php?query=&group=gmane.mail.spam.spamassassin.general GMANE] [http://www.nabble.com/SpamAssassin-f191.html Nabble] [http://www.gossamer-threads.com/lists/engine?do=search;search_forum=forum_2;list=spamassassin Gossamer]
[http://gmane.org/plot-rate.php/plot.png?group=gmane.mail.spam.spamassassin.general&plot.png]
Dev
For developer discussions. If you're not already on the general users list, you should probably go there first 
- Subscription: send mail to dev-subscribe at spamassassin.apache.org
Archives: [http://mail-archives.apache.org/mod_mbox/spamassassin-dev/ Apache] [http://news.gmane.org/thread.php?group=gmane.mail.spam.spamassassin.devel GMANE] [http://marc.theaimsgroup.com/?l=spamassassin-devel&r=1&w=2 MARC] [http://www.nabble.com/SpamAssassin-f191.html Nabble] [http://www.gossamer-threads.com/lists/spamassassin/devel/ Gossamer]
Search: [http://www.nabble.com/SpamAssassin-f191.html Nabble] [http://www.gossamer-threads.com/lists/engine?do=search;search_forum=forum_3;list=spamassassin Gossamer]
[http://gmane.org/plot-rate.php/plot.png?group=gmane.mail.spam.spamassassin.devel&plot.png]
Commits
For SVN and Wiki change messages. If you don't know what they are, you don't want to be on this list, and if you're not already on SpamAssassin-users, you should probably go there first
- Subscription: send mail to commits-subscribe at spamassassin.apache.org
Archives: [http://mail-archives.apache.org/mod_mbox/spamassassin-commits/ Apache] [http://news.gmane.org/thread.php?group=gmane.mail.spam.spamassassin.cvs GMANE] [http://www.gossamer-threads.com/lists/spamassassin/commits/ Gossamer]
Search: [http://www.gossamer-threads.com/lists/engine?do=search;search_forum=forum_4;list=spamassassin Gossamer]
[http://gmane.org/plot-rate.php/plot.png?group=gmane.mail.spam.spamassassin.cvs&plot.png]
Dev-DE
A list for German-language rule development. Not very active currently.
- Subscription: send mail to dev-de-subscribe at spamassassin.apache.org
Archives: [http://mail-archives.apache.org/mod_mbox/spamassassin-dev-de/ Apache] [http://marc.theaimsgroup.com/?l=spamassassin-devel-de&r=1&w=2 MARC] [http://news.gmane.org/thread.php?group=gmane.mail.spam.spamassassin.devel.german GMANE]
[http://gmane.org/plot-rate.php/plot.png?group=gmane.mail.spam.spamassassin.devel.german&plot.png]
Dev-BR
A list for Brazilian rule development.
Subscription: [http://lists.sourceforge.net/mailman/listinfo/spamassassin-devel-br here]
Archives: [http://mail-archives.apache.org/mod_mbox/spamassassin-dev-br/ Apache] [http://marc.theaimsgroup.com/?l=spamassassin-devel-br&r=1&w=2 MARC]
Security Issues
We treat security-related issues specially. If you believe you have discovered a security issue related to SpamAssassin, please send a mail to security at spamassassin.apache.org with full details.
Private Lists
The project management committee maintains a private list, used for a very limited subset of discussions that cannot take place in public. This is not open for public subscription, but is documented here for completeness and transparency. See ProjectRoles for more details on what this list is used for.
Other Ways of Communication
["IRC"] is also an option.