Free Email Software for Linux

Sympa is a scalable, open source, internationalized, free and highly customizable mailing list application implemented in Perl and engineered to handle big lists, with over 700,000 subscribers. It offers a complete web-based interface for both the...

MeTA1 is an open source software project that provides a modularized MTA (Message Transfer Agent) consisting of five (or more) persistent processes, with four of them being multi-threaded. It has been designed to be secure, reliable, efficient and...

Sylpheed is an open source and feature-rich email client that provides users with an easy-to-use and intuitive GUI (Graphical User Interface). It is compatible with Linux and Windows operating systems. Even if it’s not a popular email application,...

vmm is an open source, freely distributed, configurable and easy to use command-line software implemented in the Python programming language and designed for postmasters and administrators who want to manage mail accounts, mail domains, alias-domains, as...

email2trac is an open source, freely distributed and platform-independent command-line software implemented in Python and comprised of several utilities that can be used for easily and quickly converting emails to tickets for the Trac issue tracking...

Nullmailer is a very small, open source and totally free command-line software implemented in C++ and designed for GNU/Linux and UNIX-like operating systems, as a MTA (Mail Transport Agent) replacement of your default mail transport agent.A powerful...

Clement is a completely free and open source command-line/web-based software project implemented in C and designed from the offset to work as an e-mail server firewall, with the main purpose of trapping most of the unwanted messages (also known as spam)...

OpenSMTPD is a completely free, cross-platform and open source implementation of a server-side SMTP (Simple Mail Transfer Protocol) protocol, as defined by the RFC 5321 specification. The OpenSMTPD software includes various extra extensions and allows...

Courier is a completely free, cross-platform and open source mail transfer agent (MTA), an integrated mail and groupware server based on open protocols, such as IMAP (Internet Message Access Protocol), POP3 (Post Office Protocol 3), SSL (Secure Sockets...

IMP is a completely free, platform-independent and open source web-based application, a plugin for the Horde Groupware suite that provides an individual Internet Messaging Program, which allows users to access IMAP (Internet Message Access Protocol) and...