Anti-Spam SMTP Proxy Server implements multiple spam filters
Take back control of your email with this mail server in a box
Provides mechanisms for walking through any arbitrary PHP variable
SMTP email proxy and relay server
Sync Outlook with Google, SOGo or any other CalDAV / CardDAV server
Email Notifier For Windows
Browse the pirate bay site with this windows app
imap cleanup & command line tool
javascript to convert thunderbird/seamonkey filters to sieve rules
PhpMailFilter, script PHP antispam