HyperKitty vs Postorius
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?
HyperKitty
Web archive interface for Mailman 3 mailing lists
VS
Postorius
Web administration interface for Mailman 3
| Feature | HyperKitty | Postorius |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | GPL-3.0 | GPL-3.0 |
| Language | Python | Python |
| Setup difficulty | Hard | Hard |
| Min. RAM | 1,024 MB | 512 MB |
| Deployment | docker, source | docker, source |
| GitHub stars | ★ 200 | ★ 200 |
| First released | 2014 | 2012 |
| Replaces | Google Groups | Google Groups |
Why pick each one
Choose HyperKitty if…
- Released under the GPL-3.0 license
- First-class Docker support for quick deployment
- Written in Python
Choose Postorius if…
- Released under the GPL-3.0 license
- First-class Docker support for quick deployment
- Written in Python
- Lightweight — runs in 512 MB RAM
Frequently asked questions
Is HyperKitty or Postorius better?
Neither is universally better. HyperKitty has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are HyperKitty and Postorius free and open-source?
Yes. HyperKitty is licensed under GPL-3.0 and Postorius under GPL-3.0. Both can be self-hosted at no software cost.
Can I run HyperKitty and Postorius with Docker?
HyperKitty: yes. Postorius: yes.