New Email Software for Linux

Kolab is a groupware solution for emails, appointments, contacts and more.Kolab supports mixed client environments (Outlook/KDE) because of an open storage format. Any email client speaking standard protocols can be served.What is new in this...

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...

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...

Usermin For Webmail is an open source, platform-independent, user-friendly and web-based user interface, a mod of the Usermin software, specially designed for the administration of web-based email applications. Features at a glance It is a stripped down...

Cerberus Helpdesk or Cerb is a web-based commercial, platform-independent and open source email response system that is easy to integrate, customize and extend. It was created to decrease the need for time-consuming and redundant human interaction with...

Iris is an open source and completely free web-based software project that comprises of a CGI script, Dovecot configuration files, an Exim MTA (Mail Transfer Agent), as well as Ansible and Vagrant playbooks. Being based on Exim, Roundcube, Dovecot,...

getmail is an open source, simple, small, free and fast command-line software project implemented in Python and designed to be used for retrieving electronic mail messages from normal, single-user mailboxes, as well as from multidrop (domain) mailboxes....

Horde Groupware is an open source and enterprise ready, web-based collaboration suite that allows users to share and manage calendars, tasks, contacts and notes.Horde Groupware incorporates the separately available software Turba, Kronolith, Mnemo and...

Sendmail is an open source Mail Transfer Agent (MTA), a tool that moves email messages from one computer to another.Sendmail implements a general email routing facility, featuring forwarding, automatic routing to network gateways, flexible configuration...

Ascension is my attempt at an email client. It makes use of the KDE libraries, so you will need KDE installed if you wish to use it (works with 3.2, might work with 3.1). Although the code is still in alpha, I have been using it as my main email client...