Self-hosted Email

Open Source Collaboration, providing integration with your existing Linux mailserver, native mobile...

ArgoSoft Mail Server is a best in the class webmail server that is basically the suit of multiple servers, FTP server and various other forms of servers that allow the users to manage all of their servers.

VBoxAdm is web frontend written for mailservers running with Postfix, Dovecot and a MySQL backend.

Scriptable and scalable SMTP server and email framework designed for service providers.

The Courier IMAP server is a fast, scalable, enterprise IMAP server that uses Maildirs.

OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.

KumoMTA is the world's first Open-Source MTA designed from the ground-up for large-volume senders. Get a fast, flexible, supported solution.

Open Source free

Sendmail is a general purpose internetwork email routing facility that supports many kinds of...

Third party hosting for Microsoft Exchange services.

OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and...

Horde Groupware is a free, enterprise ready, browser based collaboration suite.

django-cyradm is a web interface to manage postfix controlling accounts, aliases and virtual...

Boost your productivity with reliable access anywhere with services like email, calendar, file sharing, meetings, instant messaging, and Office Online