listmonk 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?
listmonk
Self-hosted newsletter and mailing list manager
VS
Postorius
Web administration interface for Mailman 3
| Feature | listmonk | Postorius |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | AGPL-3.0 | GPL-3.0 |
| Language | Go | Python |
| Setup difficulty | Easy | Hard |
| Min. RAM | 512 MB | 512 MB |
| Deployment | docker, binary, source | docker, source |
| GitHub stars | ★ 22,670 | ★ 200 |
| First released | 2020 | 2012 |
| Replaces | Mailchimp, Sendinblue | Google Groups |
Why pick each one
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 listmonk or Postorius better?
listmonk is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Postorius if its specific feature set fits your needs better.
Are listmonk and Postorius free and open-source?
Yes. listmonk is licensed under AGPL-3.0 and Postorius under GPL-3.0. Both can be self-hosted at no software cost.
Can I run listmonk and Postorius with Docker?
listmonk: yes. Postorius: yes.