# Posthorn

5 Hacker News commenters recommended Posthorn and 1 criticized it, November 2025 to November 2026. It was recommended in 1 of 13 months.

**Verdict:** Lets self-hosted apps send mail through a local relay to your transactional mail provider, with no mail server to run; one critic flags the risk of exposed mail services.

## Why people recommend it

- Solves a real self-hosting mail gap (3 comments): "for gluing together a bunch of different apps you're self hosting, I think this makes sense and addresses a real issue" ([source](https://news.ycombinator.com/item?id=48290990)) "This solves an issue that I really do have." ([source](https://news.ycombinator.com/item?id=48306953)) "that's the gap I built Posthorn to fill" ([source](https://news.ycombinator.com/item?id=48313286))
- Good mix of features (2 comments): "Nice project, nice initial subset of options." ([source](https://news.ycombinator.com/item?id=48291358)) "An interesting combination of features." ([source](https://news.ycombinator.com/item?id=48290823))

## Alternatives hackers recommend

- [AgentMail](https://hackerapproved.com/p/agentmail.md): 40 recommend
- [Resend](https://hackerapproved.com/p/resend.md): 12 recommend
- [Mailgun](https://hackerapproved.com/p/mailgun.md): 8 recommend
- [SendGrid](https://hackerapproved.com/p/sendgrid.md): 8 recommend

## Cite as

Hacker Approved, "Posthorn", https://hackerapproved.com/p/posthorn/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).