Postal
MIT self-hosted mail delivery: SMTP + HTTP API
Comms / Email · OSS/MIT · 16.9k
Reviewed 2026-09-04 · last push 2026-10-20 · repo checked 2026-10-21
What's Good
MIT. SMTP + HTTP API mail delivery you run. Full control of queues, IPs, and logs. Docs live via GitHub (postalserver.io 301s — use the repo). No per-seat tax on the core.
The Catch
Self-hosted mail delivery SMTP+HTTP API — not Resend hosted tx email, not Plunk Node email, not Listmonk newsletter app. You own deliverability and IP reputation. Distinct from Resend, Plunk, and Listmonk.
Verdict
MIT self-host mail. Free to run; deliverability is your ops.
Embed
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Markdown
[](https://stackgems.com/gems/postal)
HTML
<a href="https://stackgems.com/gems/postal"><img src="https://stackgems.com/badge/postal.svg" alt="Postal reviewed on Stack Gems" height="20"></a>