Mutt

Geary is a lightweight email program designed around conversations and built for the GNOME desktop. Geary is a new email reader for GNOME designed to let you read your email …

Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under one roof. Thanks to the powerful KPart technology, existing applications are...

Alpine is a fast, easy to use email client that is suitable for both the inexperienced email user as well as for the most demanding of power users. Alpine is …

nPOPuk is an ultra-small, but comprehensive, e-mail client that runs on a wide range of Windows-based operating systems

Zenbe Mail was shutting down on Oct 8th, 2010. However, the users can still access their Shareflow data: after Oct 8th, logging in will bring you directly into Shareflow without …

The shareware e-mail client has been developed by a Moldavian company. The Bat supports IMAP and POP3 and has integrated S/MIME as well as PGP and supports external GPG. The …

Sup is a console-based email client for people with a lot of email. It supports tagging, very fast full-text search, automatic contact- list management, custom code insertion via a hook …

Based on Thunderbird but Postbox is not open source. "A new way to work with email Postbox offers powerful new ways to find, use, and view email messages and content, …

Popcorn is a lightweight and portable e-mail client for Windows. The Popcorn e-mail client is no longer actively developed, updated or supported by Ultrafunk in any way.

A super sexy, ultra simple desktop mail client built in vala Postler aims to be easy, simple, clean, beautiful, and automagic. It handles IMAP beautifully, and provides the user with …