Maddy Mail Server vs Mail-in-a-Box
| Tagline | Single-binary Go mail server replacing Postfix, Dovecot, OpenDKIM, and OpenDMARC | Turn any Ubuntu VPS into a complete, self-hosted mail server in one command |
| Category | Email & Newsletters | Email & Newsletters |
| Replaces | Gmail / Google Workspace, SendGrid, Mailchimp | Gmail / Google Workspace, Mailchimp, SendGrid |
| GitHub stars | 6k | 15k |
| Language | Go | Shell |
| License | GPL-3.0 | CC0-1.0 |
| Self-host difficulty | 4/5 Involved | 2/5 Easy |
| Deploy options | Docker Manual | Manual |
| Managed hosting | ||
| Last updated | 23 days ago | 25 days 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.
Maddy Mail Server
- No webmail interface; users need a separate IMAP client
- Documentation is less comprehensive than established stacks like Postfix + Dovecot
- No built-in web admin panel for managing accounts
- Smaller ecosystem and community compared to traditional mail server components
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
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. Maddy Mail Server has seen more recent development. Open each guide below for deploy steps and the full feature gap.
Maddy Mail Server
Single-binary Go mail server replacing Postfix, Dovecot, OpenDKIM, and OpenDMARC
Mail-in-a-Box
Turn any Ubuntu VPS into a complete, self-hosted mail server in one command