Discover / Marketing

Postal Mail Delivery Platform

by postalserverRuby

Full-featured open-source mail delivery platform for incoming and outgoing emails.

Toolstable

Maturity: stable because 9y old, 3.3.7 released 61d ago. Derived from release and commit history, not a rating.

Stars
17k
Forks
1.3k
Downloads / mo
Last commit
2026-08-03
License
MIT
Open issues
90

Market and trust evidence

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In practice

Written by AI from this repository’s README · low confidence

Transactional email otherwise depends on a hosted provider that holds your sending infrastructure and data.

Use it when

When you want a self hosted alternative to Sendgrid, Mailgun or Postmark for website and application mail.

Not the right pick when

The README is essentially a link list, so requirements, installation and operations live entirely in external docs.

Capabilities

  • Complete mail server for websites and web servers
  • Handles both incoming and outgoing email
  • Runs on servers you control
  • Installation instructions, FAQs and feature list linked from the readme

Cost: Free and open source

Video walkthroughs

Third-party YouTube uploads matched to this tool by title, channel and repository name on 2026-08-03. Not made, reviewed or endorsed by SkillPilot. View counts and publish months are as of the match date and the month is approximate. Nothing loads from YouTube until you press play.

What the repository ships

Has testsHas docsDocker imageSecurity policyCI configured

Detected from the actual files in the repository root.

Latest release 3.3.7

Published 2026-06-03

3.3.7 (2026-06-03)

Bug Fixes

  • http: prevent SSRF in outbound webhook and HTTP endpoint requests (11c9814)
  • message-db: prevent SQL injection via condition keys (GHSA-x2hq-rfpg-3xr5) (4314a6e)
  • specs: stub IPv6 support in address guard IPv6 literal spec (029bfe0)

Miscellaneous Chores

  • deps: upgrade rack & rails (0445e5c)
  • update security vulnerability reporting instructions (8be1e27)

Tags

README

GitHub Header

Postal is a complete and fully featured mail server for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready for you to run on your own servers.

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