craigmccaskill/posthorn

Self-hosted email gateway between your apps and a transactional mail provider (Postmark, Resend, Mailgun, AWS SES, or outbound-SMTP). Three ingress shapes (HTTP form, HTTP API, SMTP). One Docker container, one TOML config.

83 best points · 60 comments · 1 Hacker News post · 217 GitHub stars · View on GitHub

Hacker News discussions

• Show HN: Posthorn, self-hosted mail gateway (83 points, 60 comments, by craigmccaskill, 2026-05-27)