Open Source Projects tagged "Smtp"
A curated collection of the best open source projects tagged "Smtp". Each listing includes a website screenshot along with a detailed review of its features.
Self-hosted newsletter and mailing list manager
Stars
24,194Last commit
2 days agoLicense
AGPL-3.0
Send email campaigns and transactional messages to millions of subscribers with a single high-performance binary backed by Postgres.
Open Source Alternative to:
Open-source mail server with unlimited sending & AI tools
Stars
16,205Last commit
5 months agoLicense
AGPL-3.0
Self-hosted email marketing platform with unlimited sending, AI-powered email creation, real-time analytics, and no monthly fees. Complete SMTP solution.
Open Source Alternative to:
Self-hosted mail delivery platform for sending and receiving email
Stars
16,936Last commit
4 days agoLicense
MIT
Run your own mail delivery infrastructure with a web interface, webhooks, IP pools, and spam filtering integrations for inbound and outbound email.
Open Source Alternative to:
Open-source email API with enterprise deliverability
Stars
922Last commit
5 days agoLicense
AGPL-3.0
Self-hosted email API alternative to AWS SES & Mailgun. Open-source AGPL-3.0 with enterprise features, automated deliverability, and cloud version coming 2026.
Open Source Alternative to:
Openlane – Open-source, developer-first platform for automated compliance, risk management, and built-in Trust Center.
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