| Price from | Free | €11.61/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 7 |
| Spec score · Mail Server Software | 7.9 (#18) | 8.0 (#12) |
| Administration | Admin features include global administrators, announcements, per-domain delegation, and quotas. | Its online administration panel manages domains, mailboxes, aliases, and other settings. |
| Integrations | The documentation describes Nextcloud authentication through IMAP and calendar and address-book access through Radicale using WebDAV/CardDAV/CalDAV clients. | The project says Modoboa integrates with Postfix and Dovecot and can use MySQL, MariaDB, PostgreSQL, or SQLite as its central database. |
| Purpose | The project aims to provide an easily set up and maintained full-featured mail server without proprietary software or unrelated groupware features. | Modoboa is an open-source platform for installing and managing a self-hosted email server. |
| Support | The project directs simple questions to its Matrix room, complex questions to GitHub discussions, and bug reports to GitHub issues; it describes itself as mostly developed in contributors' free time. | The project offers paid installation or upgrade assistance, help with specific issues, and annual maintenance services. |