Open-source (MIT) mail delivery platform you run on your own servers, handling incoming and outgoing email for websites and applications. Includes a web UI, webhooks, DKIM signing, bounce handling, and a REST API. Actively maintained; postalserver.io now redirects to GitHub.
At a glance
- Free tier
- Free and open source (self-hosted, MIT license)
- Paid from
- None; self-hosted, infrastructure costs only · pricing page
- Public API
- Yes docs
- MCP server
- No · No MCP server found for Postal
- Best for
- Self-hosted SendGrid/Mailgun alternative
- Website
- https://github.com/postalserver/postal
Postal pricing
Free and open source (self-hosted, MIT license). Paid plans start at None; self-hosted, infrastructure costs only. Current numbers live on the Postal pricing page.
Work at Postal? Claim this listing to correct facts, add details, and reach readers comparing platforms.
Claim this listing
How Postal compares
See Postal alternatives, or line it up head to head: Postal vs Substack.
The full comparison table has all 72 platforms side by side.