Take back control of your email with this mail server in a box
The classic email sending library for PHP
Catches mail and serves it through a dream
Lightweight Open Source webmail written in PHP and JavaScript
Local, web-based mail server application. Slurp mails into oblivion!
Mail hosting made simple
Client daemon to move mail from POP and IMAP to your local computer
eMail is a fork of Interlink for IA-32 i686 with more optimizations.
Universal server
SMTP email proxy and relay server
Anti Spam SMTP Gateway
The first Open-Source high-performance MTA for high-volume senders
Booking/reservation of meeting rooms/equipment with e-mail invitations
Interactive spam removal utility
Strong Email & Apache Log Analysis with Active Security Features
software for email automation (newsletters, transaction mails, etc.)
Web and API based SMTP testing
Zentyal is a Linux Small Business Server