Lightweight Open Source webmail written in PHP and JavaScript
Anti-Spam SMTP Proxy Server implements multiple spam filters
Anti Spam SMTP Gateway
Strong Email & Apache Log Analysis with Active Security Features
JavaScript/XML engine for Apache
Threaded Python IMAP4 client
Mass lobby by email through subscribers' own email accounts
Ciphermail email encryption gateway (S/MIME, OpenPGP, PDF encryption)
High volume bulk mailer
This is a php script that runs outside Drupal to send your Simplenews
A MemberAdapter and cronjob to contact an ldap server for mailman
Sends external IP changes via email, using Imap.
A faster version of Xoops optmized for speed
Postfix + Courier + Mysql Admin Webfrontend