SMTP email proxy and relay server
Fast Bayesian spam filter along lines suggested by Paul Graham
PHP SDK to connect with Easy Email Verification API and validate email
Client daemon to move mail from POP and IMAP to your local computer
mailbox synchronizer
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
Gross greylisting server
Strong Email & Apache Log Analysis with Active Security Features
C library for sending e-mail (with attachments) from C/C++
Remote anti spam utility
software for email automation (newsletters, transaction mails, etc.)
secure, reliable, fast MTA
JavaScript/XML engine for Apache