Browse free open source Email software and projects below. Use the toggles on the left to filter open source Email software by OS, license, language, programming language, and project status.
Sync Outlook with Google, SOGo or any other CalDAV / CardDAV server
Simple-to-use/-install issue-tracking system: web, REST, email, CLI
Catch incoming emails in your Laravel application
A mail driver to quickly preview mail
Send beautiful HTML emails with Laravel
Anti-Spam SMTP Proxy Server implements multiple spam filters
Powerful Open Source Email Marketing app with analytics & segmentation
SMTP email proxy and relay server
Mail Notifer for Windows
Client daemon to move mail from POP and IMAP to your local computer
Open source email service with a strong focus on security and privacy
IGSuite is a web-ajax-based Integrated Groupware Suite
Open source e-mail tracker made with Flask, setup & run in 10 minutes
SaltOS, ERP, CRM, Business Management Suite, Josep Sanz Campderrós
Open Source Email App for Android
Provides mechanisms for walking through any arbitrary PHP variable
Take back control of your email with this mail server in a box
Universal server