Fast Bayesian spam filter along lines suggested by Paul Graham
Send Mime and Smime Emails to Any Type of Mail Server
Secure mail + Tor gateway
cab
YAM - The E-mail client for Amiga computers
Simple Email sender application in the smartest way .
CRM114 milter for sendmail
QSF milter for sendmail
Multiple account (or label) Gmail notifier (without storing passwords)
Microsoft Exchange compatible server and client libraries