Mailing lists are gatewayed into news groups. The news groups are
never expired.
The mail is run through mail-to-news conversion
filters. Messages that SpamAssassin says are
spam are cross-posted to gmane.spam.detected. This can be
disabled on a group-by-group basis.
A header containing an URL is added to all messages. Any user can
click on this URL to report a message as spam/not spam. Administrators
later use a different web interface to approve/reject these reports.
Gmane has more stats than you can shake
a stick at.
Mail addresses can be encoded on a
list-by-list basis, and each individual user can override/set
encryption on a message-by-message basis by using the X-Archive
header.
The incoming mail queue is usually pretty short, ensuring that
the archive is very current.
Gmane provides a TMDA-fueled mail
forwarding service usable by anybody.
Articles posted to Gmane newsgroups are forwarded to their
respective mailing lists after the user has gotten a per-group authorization.
Messages are properly cross-posted to
their respective groups if they are cross-posted to several mailing
lists. Messages cross-posted to several groups are sent to all their
respective mailing lists.
Posting to a moderated or read-only mailing list will result in
a bounce message.