The classic email sending library for PHP
High performance, self-hosted, newsletter and mailing list manager
Take back control of your email with this mail server in a box
Mail hosting made simple
Local, web-based mail server application. Slurp mails into oblivion!
Anti-Spam SMTP Proxy Server implements multiple spam filters
Sync Outlook with Google, SOGo or any other CalDAV / CardDAV server
Powerful Open Source Email Marketing app with analytics & segmentation
mailbox synchronizer
Universal server
Mailing List Manager - Web-based, Self-Hosted, Feature-Rich
Anti Spam SMTP Gateway
OpenXP 5 - a multi-protocol offline mail and news reader
The first Open-Source high-performance MTA for high-volume senders
Gross greylisting server
Strong Email & Apache Log Analysis with Active Security Features
Email Notifier For Windows
software for email automation (newsletters, transaction mails, etc.)
Self-hosted newsletter app