Top 12 products relevant to Email, Self-hosted Email, and MTA

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

Open Source

Dovecot is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with...

Open Source

MailerQ is a high performance Mail Transfer Agent (MTA) designed for delivering large volume email messages at very high speeds.

The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open...

Open Source

Open source SMTP server written in Node.js.

Open Source

DBMail is a fast, scalable IMAP4 and POP3 server that stores all email and users in a Postgresql...

Open Source

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

The Cyrus IMAP server differs from other IMAP server implementations in that it is generally...

Open Source

The Mercury Mail Transport System is a mail server that sends and receives messages on behalf of a...

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

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

Archiveopteryx stores email in a database and provides access to it through IMAP and more.