Email Management
Postal
Postal is a complete, open-source mail delivery platform designed for sending high volumes of transactional and marketing emails.
16,221 stars
Last commit Dec 30, 2025mit
Mail0
Mail0 is an open source email application focused on privacy and security, offering a modern approach to email communication.
10,372 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.
1,681 stars
Last commit Jan 22, 2026
useSend
An open-source email platform that enables sending transactional, marketing, and product emails with pay-per-use pricing and self-hosting capabilities.
3,661 stars
Last commit Jan 22, 2026agpl-3.0