Postal
MIT self-hosted mail delivery: SMTP + HTTP API
Comms / Email · OSS/MIT · 16.8k
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
[](https://stackgems.com/gems/postal)