Email Management
Find and compare the best open source alternatives to popular software tools. Get weekly recommendations in your inbox.
Postal
Postal is a complete, open-source mail delivery platform designed for sending high volumes of transactional and marketing emails.
15,873 stars
Last commit Aug 23, 2025mit
Mail0
Mail0 is an open source email application focused on privacy and security, offering a modern approach to email communication.
9,546 stars
Last commit Sep 2, 2025