Mail-in-a-Box vs wildduck
| Tagline | Turn any Ubuntu VPS into a complete, self-hosted mail server in one command | Scalable, horizontally distributed IMAP/POP3 mail server with no single point of failure |
| Category | Email & Newsletters | Email & Newsletters |
| Replaces | Gmail / Google Workspace, Mailchimp, SendGrid | Gmail / Google Workspace, SendGrid, Mailchimp |
| GitHub stars | 15k | 2.1k |
| Language | Shell | Nodejs |
| License | CC0-1.0 | EUPL-1.2 |
| Self-host difficulty | 2/5 Easy | 5/5 Advanced |
| Deploy options | Manual | Docker Manual |
| Managed hosting | ||
| Last updated | 25 days ago | today |
| 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
wildduck
- No built-in web admin UI; management is done through a JSON HTTP API only
- SMTP is a separate component (Haraka/ZoneMTA) requiring additional setup
- MongoDB dependency adds operational overhead compared to simpler SQL-backed servers
- Documentation assumes strong Node.js and MongoDB expertise
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. wildduck 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
wildduck
Scalable, horizontally distributed IMAP/POP3 mail server with no single point of failure