| Price from | Free | €11.61/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Linux | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 7 |
| Spec score · Mail Server Software | 7.7 (#22) | 8.0 (#12) |
| Integrations | Listed plugins support systems and services including LDAP, Dovecot, Redis, Kafka, MongoDB, SpamAssassin, and Rspamd. | The project says Modoboa integrates with Postfix and Dovecot and can use MySQL, MariaDB, PostgreSQL, or SQLite as its central database. |
| Purpose | Haraka is a high-performance, flexible SMTP server written in Node.js. | Modoboa is an open-source platform for installing and managing a self-hosted email server. |
| Support | The project directs users to its mailing list and GitHub Issues for help. | The project offers paid installation or upgrade assistance, help with specific issues, and annual maintenance services. |