Cyrus IMAP vs Postfix
Cyrus IMAP
cyrusimap.orgPostfix
postfix.orgSide by side
| Figure | Cyrus IMAP | Postfix |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| macOS | — | Yes |
| Linux | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 0 |
| Spec score · Email Server Software | 8.0 (#8) | 7.2 (#21) |
| Spec score · Mail Server Software | 7.9 (#16) | 7.2 (#30) |
| Filtering | It supports server-side email filtering through Sieve. | Postfix supports content filters and the Sendmail Milter mail-filter protocol. |
| Integrations | The installation guide describes receiving mail from SMTP servers such as Sendmail, Postfix, and Exim through LMTP. | The add-on directory lists third-party tools for authentication, content filtering, policy services, webmail, and other functions; entries are maintained by their authors without formal evaluation. |
| Intended users | The project says Cyrus is used in production at universities and private enterprises. | The project describes postfix-users as a forum for people using Postfix and postfix-devel as a list for those designing, implementing, or maintaining its source code. |
| Purpose | Cyrus IMAP is an email, contacts, and calendar server. | Postfix aims to be fast, easy to administer, and secure. |
| Support | The project points users to active mailing lists for help. | The postfix-users mailing list is for questions, problem reports, and feature requests; non-member postings are silently discarded. |
Plans
In their own words
Cyrus IMAP
Cyrus IMAP has no write-up on Specifiction yet; its figures are above.