OpenTrashmail vs Mailpit
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?
OpenTrashmail
Complete trashmail solution that exposes an SMTP server and has a web
VS
Mailpit
Email and SMTP testing tool with web UI
| Feature | OpenTrashmail | Mailpit |
|---|---|---|
| Category | Mail Servers | Mail Servers |
| License | Apache-2.0 | MIT |
| Language | PHP | Go |
| Setup difficulty | Medium | Easy |
| Min. RAM | 512 MB | 64 MB |
| Deployment | docker | docker, binary |
| GitHub stars | ★ 919 | ★ 10,067 |
| First released | 2020 | 2022 |
| Replaces | — | Mailtrap, MailHog |
Why pick each one
Choose OpenTrashmail if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Written in PHP
- Lightweight — runs in 512 MB RAM
Frequently asked questions
Is OpenTrashmail or Mailpit better?
Mailpit is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider OpenTrashmail if its specific feature set fits your needs better.
Are OpenTrashmail and Mailpit free and open-source?
Yes. OpenTrashmail is licensed under Apache-2.0 and Mailpit under MIT. Both can be self-hosted at no software cost.
Can I run OpenTrashmail and Mailpit with Docker?
OpenTrashmail: yes. Mailpit: yes.