Postal
Complete and fully featured mail server for use by websites & web servers.
- GitHub stars
- 16,858
- License
- MIT
- Latest release
- 3.3.7
3 June 2026 - Last commit
- 1 October 2026
- Runs on
- Docker, Ruby
Commits per month, last 12 months
18 commits
How to self-host Postal
Postal runs on Docker and Ruby. The project's own install guide is the place to start; most people put it on a small server with Docker and a reverse proxy for HTTPS.
- Get a server: a home server, a VPS, or a managed app host.
- Install it the way the project's docs describe, usually with Docker Compose.
- Put it behind HTTPS and set up backups before you add real data.
- Update it regularly. Watch the project's releases.
Similar apps
- docker-mailserver
Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container. Only configuration files, no SQL database.
- Mail-in-a-Box
Turns any Ubuntu server into a fully functional mail server with one command.
- Stalwart Mail Server
All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features.
- Mailcow
Mail server suite based on Dovecot, Postfix and other open source software, that provides a modern Web UI for administration.
- Mailu
Simple yet full-featured mail server as a set of Docker images.
- SimpleLogin
Open source email alias solution to protect your email address. Comes with browser extensions and mobile apps.
Questions
Is Postal free?
Yes. Postal is open source under the MIT license, so you can use it without paying for a license. You pay only for the server it runs on.
Can I self-host Postal?
Yes. Postal runs on Docker and Ruby. Follow the install guide in the project's documentation, or use a host that installs it for you.
Is Postal still maintained?
The last change to Postal's code was on 1 October 2026, with 18 commits in the last 12 months.
Topics
App data from awesome-selfhosted (CC BY-SA 3.0), stars and activity from GitHub.