A Powerful PHP bulk email sending script with smtp support.
Multi-protocol server written in Java
tinyCampaign is a simple and lightweight newsletter system.
Simple, web-based address & phone book
Free and open source webmail software
Source code for be able to use Relation Tags.
Zimbra Backup and Restore
send mass mail
ncurses VCard 3.0 contact management editor
Multiple account (or label) Gmail notifier (without storing passwords)
Keep up to date with your mail! Notifications, easy configuration.
A PHP API which provides Sync Support for multiple PHP suppo Databases
Provide a Java Mail Provider for Exchange-hosted mailboxes