Browse free open source Email Clients and projects for Linux below. Use the toggles on the left to filter open source Email Clients by OS, license, language, programming language, and project status.
Open source email service with a strong focus on security and privacy
SaltOS, ERP, CRM, Business Management Suite, Josep Sanz Campderrós
IGSuite is a web-ajax-based Integrated Groupware Suite
NaSMail is a standards-based webmail package written in PHP
Windows eml and mbox viewer.
A faster, leaner email client and fork of Nylas Mail
Add keyboard shortcuts to switch between different thread views
Lightweight Open Source webmail written in PHP and JavaScript
Microsoft Exchange compatible server and client libraries
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
Free and open source webmail software
Thunderbird tray icon add-on
Convert Outlook and Outlook Express files to open formats