Citadel vs Courier Mail Server
Citadel
citadel.orgCourier Mail Server
courier-mta.orgSide by side
| Figure | Citadel | Courier Mail Server |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Mail Server Software | 8.3 (#4) | 8.5 (#1) |
| Authentication | Citadel can authenticate users through its own database, host-system accounts, or LDAP including Microsoft Active Directory schemas. | Authentication options include PAM, LDAP, MySQL, and PostgreSQL, with PostgreSQL identified as beta on the features page. |
| Deployment | Citadel can run in Docker, through a Linux build script, from source, or via a hosting provider. | It can act as an intermediate mail relay, receive mail for multiple domains, or do both. |
| Support | Support is provided through an active user and developer community, an online knowledge base, a support forum, and a mailing list. | The site lists an unmoderated courier-users mailing list for questions, bug reports, and comments, plus a separate read-only announcement list. |
Plans
In their own words
Courier Mail Server
Courier Mail Server has no write-up on Specifiction yet; its figures are above.