Mailu 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 | Mailu | NeoMutt |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | MIT | GPL-2.0 |
| Language | Python | C |
| Setup difficulty | Medium | Medium |
| Min. RAM | 2,048 MB | 64 MB |
| Deployment | docker, kubernetes | binary, source |
| GitHub stars | ★ 7,443 | ★ 3,799 |
| First released | 2016 | 2016 |
| Replaces | Google Workspace, Microsoft 365 | Microsoft Outlook |
Why pick each one
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 Mailu or NeoMutt better?
Neither is universally better. Mailu has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Mailu and NeoMutt free and open-source?
Yes. Mailu is licensed under MIT and NeoMutt under GPL-2.0. Both can be self-hosted at no software cost.
Can I run Mailu and NeoMutt with Docker?
Mailu: yes. NeoMutt: check the project docs for container support.