Docker Mailserver vs Betterbird
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?
Docker Mailserver
Production-ready, config-driven mail server in a container
VS
Betterbird
Community-enhanced fork of the Thunderbird email client
| Feature | Docker Mailserver | Betterbird |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | MIT | MPL-2.0 |
| Language | Shell | Shell |
| Setup difficulty | Medium | Easy |
| Min. RAM | 2,048 MB | 256 MB |
| Deployment | docker | binary, source |
| GitHub stars | ★ 18,682 | ★ 948 |
| First released | 2015 | 2022 |
| Replaces | Google Workspace, Microsoft 365 | Microsoft Outlook |
Why pick each one
Choose Docker Mailserver if…
- Reproducible, version-controllable config
- Lightweight
Choose Betterbird if…
- Released under the MPL-2.0 license
- Easy to set up — beginner-friendly
- Written in Shell
- Tiny footprint — runs in 256 MB RAM
Frequently asked questions
Is Docker Mailserver or Betterbird better?
Neither is universally better. Docker Mailserver has the larger community, while Betterbird is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Docker Mailserver and Betterbird free and open-source?
Yes. Docker Mailserver is licensed under MIT and Betterbird under MPL-2.0. Both can be self-hosted at no software cost.
Can I run Docker Mailserver and Betterbird with Docker?
Docker Mailserver: yes. Betterbird: check the project docs for container support.