MailHog 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?
MailHog
Email testing tool with a fake SMTP server
VS
Postorius
Web administration interface for Mailman 3
| Feature | MailHog | Postorius |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | MIT | GPL-3.0 |
| Language | Go | Python |
| Setup difficulty | Easy | Hard |
| Min. RAM | 64 MB | 512 MB |
| Deployment | docker, binary, source | docker, source |
| GitHub stars | ★ 16,107 | ★ 200 |
| First released | 2014 | 2012 |
| Replaces | Mailtrap | Google Groups |
Why pick each one
Choose MailHog if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Mature project with 16.1k GitHub stars
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 MailHog or Postorius better?
MailHog 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 MailHog and Postorius free and open-source?
Yes. MailHog is licensed under MIT and Postorius under GPL-3.0. Both can be self-hosted at no software cost.
Can I run MailHog and Postorius with Docker?
MailHog: yes. Postorius: yes.