The classic email sending library for PHP
A mail driver to quickly preview mail
Lightweight Open Source webmail written in PHP and JavaScript
Provides mechanisms for walking through any arbitrary PHP variable
SaltOS, ERP, CRM, Business Management Suite, Josep Sanz Campderrós
Anti Spam SMTP Gateway
Full SMTP/Mail server Appliance in 5 minutes
Zimbra Domain Admin for Zimbra Open Source Edition
Mobile Sync for Files, Email, Calendars, and Contacts
Free and open source webmail software
Synology DSM installable package for Baïkal CalDAV & CardDAV server
File sharing via e-mail
Webmail open-source in php base on Squiremail
A PHP API which provides Sync Support for multiple PHP suppo Databases
PHP powerful tool for sending e-mails fast and easily