| Price from | Free | $29.08/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 4 | 3 |
| Spec score · Mail Server Software | 8.4 (#2) | 8.0 (#13) |
| Administration | Administrators can manage the server through WebAdmin and automate operations with the command-line interface and CLI API. | The product includes web administration, a REST API, mailbox quotas, and per-mailbox settings. |
| Founded | 2004 | 2014 |
| Headquarters | Bucharest, Romania | Klatovy, Czech Republic |
| Integrations | The features page lists OpenLDAP, Active Directory, OAuth 2.0, OpenID Connect, Zoom, and Microsoft Teams integrations or support. | 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. |
| Product | Axigen is an all-in-one email, calendaring, and collaboration platform for organizations from small businesses to large service providers. | Poste.io is a self-hosted email server with web administration, webmail, spam protection, and mail server components in one Docker container. |
| Security | Listed protections include authentication and encryption, access and flow controls, SPF, DKIM, DMARC compliance, and two-step verification. | 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 support page says business and channel support engineers are available around the clock, with an average response time under two hours for all issue types. | The pricing page includes email support with PRO and PRO+, while FREE is marked as not including it. |
