Docker Mailserver vs MailWhale
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
MailWhale
Self-hosted transactional email relay with API
| Feature | Docker Mailserver | MailWhale |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | MIT | MIT |
| Language | Shell | Go |
| Setup difficulty | Medium | Easy |
| Min. RAM | 2,048 MB | 64 MB |
| Deployment | docker | docker, binary, source |
| GitHub stars | ★ 18,682 | ★ 372 |
| First released | 2015 | 2021 |
| Replaces | Google Workspace, Microsoft 365 | SendGrid, Postmark |
Why pick each one
Choose Docker Mailserver if…
- Reproducible, version-controllable config
- Lightweight
Choose MailWhale if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Written in Go
Frequently asked questions
Is Docker Mailserver or MailWhale better?
Neither is universally better. Docker Mailserver has the larger community, while MailWhale is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Docker Mailserver and MailWhale free and open-source?
Yes. Docker Mailserver is licensed under MIT and MailWhale under MIT. Both can be self-hosted at no software cost.
Can I run Docker Mailserver and MailWhale with Docker?
Docker Mailserver: yes. MailWhale: yes.