Rapid spam filtering system
Catches mail and serves it through a dream
Executes orders received by email
Gross greylisting server
Comprehensive mailing tools for PHP
Python API for Sendmail Milters.
An easy-to-use anti-spam email gateway
Wrappers around msmtp for use as queueing MTA with extra features
Protects you from spam mails and virus mails effectively with milter
Outgoing email rate limiter
A full-featured email creation and transfer class for PHP
CRM114 milter for sendmail
QSF milter for sendmail