Cyrus IMAP vs poste.io
Cyrus IMAP
cyrusimap.orgposte.io
poste.ioSide by side
| Figure | Cyrus IMAP | poste.io |
|---|---|---|
| Price from | Free | $29.08/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Linux | Yes | Yes |
| API | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 3 |
| Spec score · Email Server Software | 8.0 (#8) | 8.0 (#10) |
| Spec score · Mail Server Software | 7.9 (#16) | 8.0 (#13) |
| Founded | 1993 | 2014 |
| Integrations | The installation guide describes receiving mail from SMTP servers such as Sendmail, Postfix, and Exim through LMTP. | The documentation describes an Elasticsearch integration for PRO log viewing and names Uptime Kuma, Prometheus, and Grafana as external monitoring systems that can use its monitoring API. |
| Security | The feature documentation lists Kerberos, LDAP, and SQL authentication, access control, and a sealed system design. | The feature page states that TLS is used on every protocol, passwords use salted SHA512, and SPF, DKIM, DMARC, and SRS are supported. |
| Support | The project points users to active mailing lists for help. | The pricing page includes email support with PRO and PRO+, while FREE is marked as not including it. |
Plans
In their own words
Cyrus IMAP
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