Mail-in-a-Box vs Mailman 3
| Tagline | Turn any Ubuntu VPS into a complete, self-hosted mail server in one command | Classic GNU mailing list manager modernized with a web interface |
| Category | Email & Newsletters | Email & Newsletters |
| Replaces | Gmail / Google Workspace, Mailchimp, SendGrid | Mailchimp, Gmail / Google Workspace |
| GitHub stars | 15k | 900 |
| Language | Shell | Python |
| License | CC0-1.0 | GPL-3.0 |
| Self-host difficulty | 2/5 Easy | 3/5 Moderate |
| Deploy options | Manual | Docker Compose Manual |
| Managed hosting | ||
| Last updated | 1 month ago | 1 month ago |
| View repo | View repo |
Where each falls short
The honest trade-offs — what you give up with each, versus the proprietary tools they replace.
Mail-in-a-Box
- Requires a dedicated Ubuntu VPS with a clean IP reputation; shared hosting is not supported
- No built-in bulk mailing or newsletter campaign tools
- Limited horizontal scalability; single-server architecture only
- Webmail (Roundcube) is functional but far less polished than Gmail's UI
Mailman 3
- Focused on discussion lists, not marketing newsletters
- No campaign analytics or click tracking by design
- Setup of the three-component stack (core, Postorius, Hyperkitty) is non-trivial
Bottom line
Choose Mail-in-a-Box if you want the lower-effort setup; choose Mail-in-a-Box for the larger community and ecosystem. Mail-in-a-Box has seen more recent development. Open each guide below for deploy steps and the full feature gap.
Mail-in-a-Box
Turn any Ubuntu VPS into a complete, self-hosted mail server in one command