Email Management
Postal
Postal is a complete, open-source mail delivery platform designed for sending high volumes of transactional and marketing emails.
15,991 stars
Last commit Oct 10, 2025mit
Mail0
Mail0 is an open source email application focused on privacy and security, offering a modern approach to email communication.
9,951 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.
451 stars
Last commit Oct 23, 2025
useSend
An open-source email platform that enables sending transactional, marketing, and product emails with pay-per-use pricing and self-hosting capabilities.
2,657 stars
Last commit Oct 22, 2025agpl-3.0