Claws Mail vs NeoMutt
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 | Claws Mail | NeoMutt |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | GPL-3.0 | GPL-2.0 |
| Language | C | C |
| Setup difficulty | Easy | Medium |
| Min. RAM | 128 MB | 64 MB |
| Deployment | binary, source | binary, source |
| GitHub stars | ★ 200 | ★ 3,799 |
| First released | 2001 | 2016 |
| Replaces | Microsoft Outlook | Microsoft Outlook |
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
Choose NeoMutt if…
- Released under the GPL-2.0 license
- Active community (3.8k GitHub stars)
- Written in C
- Tiny footprint — runs in 64 MB RAM
Frequently asked questions
Is Claws Mail or NeoMutt better?
Neither is universally better. NeoMutt 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 NeoMutt free and open-source?
Yes. Claws Mail is licensed under GPL-3.0 and NeoMutt under GPL-2.0. Both can be self-hosted at no software cost.
Can I run Claws Mail and NeoMutt with Docker?
Claws Mail: check the project docs for container support. NeoMutt: check the project docs for container support.