Top 12 open-source products relevant to Email and SMTP Servers

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

Free utility to send emails from the command line. No Installation. All contained in one file.

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