Haraka vs Mail-in-a-Box
| Tagline | Fast, highly extensible event-driven SMTP server in Node.js | Turn any Ubuntu VPS into a complete, self-hosted mail server in one command |
| Category | Email & Newsletters | Email & Newsletters |
| Replaces | SendGrid | Gmail / Google Workspace, Mailchimp, SendGrid |
| GitHub stars | 5.6k | 15k |
| Language | JavaScript | Shell |
| License | MIT | CC0-1.0 |
| Self-host difficulty | 4/5 Involved | 2/5 Easy |
| Deploy options | Docker Manual | Manual |
| Managed hosting | ||
| Last updated | 8 days ago | 2 months 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.
Haraka
- Low-level MTA — no web UI, dashboards, or campaign tooling
- Requires writing/configuring plugins for real-world setups
- No built-in analytics, tracking, or template management
- Deliverability and reputation management are entirely on you
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. Haraka 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