Mailpile vs Mailtrain
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?
| Feature | Mailpile | Mailtrain |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | AGPL-3.0 | GPL-3.0 |
| Language | Python | JavaScript |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | bare-metal, source | docker, bare-metal, source |
| GitHub stars | ★ 8,825 | ★ 5,743 |
| First released | 2013 | 2016 |
| Replaces | Gmail | Mailchimp |
Why pick each one
Choose Mailpile if…
- Released under the AGPL-3.0 license
- Mature project with 8.8k GitHub stars
- Written in Python
- Lightweight — runs in 512 MB RAM
Choose Mailtrain if…
- Released under the GPL-3.0 license
- First-class Docker support for quick deployment
- Mature project with 5.7k GitHub stars
- Written in JavaScript
Frequently asked questions
Is Mailpile or Mailtrain better?
Neither is universally better. Mailpile has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Mailpile and Mailtrain free and open-source?
Yes. Mailpile is licensed under AGPL-3.0 and Mailtrain under GPL-3.0. Both can be self-hosted at no software cost.
Can I run Mailpile and Mailtrain with Docker?
Mailpile: check the project docs for container support. Mailtrain: yes.