Email Management
Postal
Postal is a complete, open-source mail delivery platform designed for sending high volumes of transactional and marketing emails.
16,100 stars
Last commit Dec 5, 2025mit
Mail0
Mail0 is an open source email application focused on privacy and security, offering a modern approach to email communication.
10,197 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.
1,415 stars
Last commit Dec 4, 2025
useSend
An open-source email platform that enables sending transactional, marketing, and product emails with pay-per-use pricing and self-hosting capabilities.
3,409 stars
Last commit Dec 8, 2025agpl-3.0