The classic email sending library for PHP
PHP Email address validator
Powerful Open Source Email Marketing app with analytics & segmentation
Mailing List Manager - Web-based, Self-Hosted, Feature-Rich
SaltOS, ERP, CRM, Business Management Suite, Josep Sanz Campderrós
NaSMail is a standards-based webmail package written in PHP
Simple, modern & fast web-based email client
Zimbra Domain Admin for Zimbra Open Source Edition
A Powerful PHP bulk email sending script with smtp support.
tinyCampaign is a simple and lightweight newsletter system.
Simple, web-based address & phone book
Free and open source webmail software
Zimbra Backup and Restore
A PHP API which provides Sync Support for multiple PHP suppo Databases