Top 11 open-source products relevant to 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

OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with...

Open Source

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

Open Source

sendEmail is a lightweight, command line SMTP email client.

Open Source

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

Inbucket is an email testing application; it will accept messages for any email address and make...

Open Source

Lightweight, cross-platform SMTP client.

Open Source