Anti-Spam SMTP Proxy Server implements multiple spam filters
The classic email sending library for PHP
Take back control of your email with this mail server in a box
Catches mail and serves it through a dream
Local, web-based mail server application. Slurp mails into oblivion!
Lightweight Open Source webmail written in PHP and JavaScript
Simple SMTP Client and Server for testing the network configuration
A universal instant messaging (IM) program
SMTP email proxy and relay server
Universal server
Powerful Open Source Email Marketing app with analytics & segmentation
A network security analysis and monitoring toolkit Linux distribution.
Fast Bayesian spam filter along lines suggested by Paul Graham
Client daemon to move mail from POP and IMAP to your local computer
A client for the remote use of VirtualBox on a server
Anti Spam SMTP Gateway
Booking/reservation of meeting rooms/equipment with e-mail invitations
Tools to make running a Mobius Hotline server on Linux easier
Monitoring tool: notifications providing
The Free & Popular FLARUM Web Software in a Complete Virtual Machine
Pushes one guest file to multiple other hotline servers