Email Management
Postal
Postal is a complete, open-source mail delivery platform designed for sending high volumes of transactional and marketing emails.
16,397 stars
Last commit Feb 24, 2026mit
Mail0
Mail0 is an open source email application focused on privacy and security, offering a modern approach to email communication.
10,487 stars
Last commit Sep 4, 2025
Notifuse
An open-source, self-hosted email marketing platform that provides a cost-effective alternative to Mailchimp and other commercial newsletter services.
1,884 stars
Last commit Mar 10, 2026
useSend
An open-source email platform that enables sending transactional, marketing, and product emails with pay-per-use pricing and self-hosting capabilities.
4,049 stars
Last commit Mar 15, 2026agpl-3.0