Postal vs Fetchmail
A side-by-side comparison of two self-hosted mail servers options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Postal
Complete mail delivery platform for outgoing email
VS
Fetchmail
Remote mail retrieval and forwarding utility
| Feature | Postal | Fetchmail |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | MIT | GPL-2.0 |
| Language | Ruby | C |
| Setup difficulty | Hard | Medium |
| Min. RAM | 2,048 MB | 32 MB |
| Deployment | docker, bare-metal | bare-metal, source |
| GitHub stars | ★ 16,724 | ★ 200 |
| First released | 2017 | 1996 |
| Replaces | SendGrid, Mailgun, Postmark | Gmail import |
Why pick each one
Choose Fetchmail if…
- Released under the GPL-2.0 license
- Written in C
- Tiny footprint — runs in 32 MB RAM
Frequently asked questions
Is Postal or Fetchmail better?
Neither is universally better. Postal has the larger community, while Fetchmail is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Postal and Fetchmail free and open-source?
Yes. Postal is licensed under MIT and Fetchmail under GPL-2.0. Both can be self-hosted at no software cost.
Can I run Postal and Fetchmail with Docker?
Postal: yes. Fetchmail: check the project docs for container support.