SHSelfHostIndex

Claws Mail vs Docker Mailserver

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?
CL Claws Mail Lightweight and fast GTK email client VS DO Docker Mailserver Production-ready, config-driven mail server in a container
FeatureClaws MailDocker Mailserver
CategoryMail ServersMail Servers
LicenseGPL-3.0MIT
LanguageCShell
Setup difficultyEasyMedium
Min. RAM128 MB2,048 MB
Deploymentbinary, sourcedocker
GitHub stars★ 200★ 18,682
First released20012015
ReplacesMicrosoft OutlookGoogle Workspace, Microsoft 365

Why pick each one

Choose Claws Mail if…

  • Released under the GPL-3.0 license
  • Easy to set up — beginner-friendly
  • Written in C
  • Tiny footprint — runs in 128 MB RAM
Claws Mail details

Choose Docker Mailserver if…

  • Reproducible, version-controllable config
  • Lightweight
Docker Mailserver details

Frequently asked questions

Is Claws Mail or Docker Mailserver better?

Neither is universally better. Docker Mailserver has the larger community, while Claws Mail is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.

Are Claws Mail and Docker Mailserver free and open-source?

Yes. Claws Mail is licensed under GPL-3.0 and Docker Mailserver under MIT. Both can be self-hosted at no software cost.

Can I run Claws Mail and Docker Mailserver with Docker?

Claws Mail: check the project docs for container support. Docker Mailserver: yes.

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