Kolab vs OpenSMTPD
Kolab
kolab.orgOpenSMTPD
opensmtpd.orgSide by side
| Figure | Kolab | OpenSMTPD |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | — |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Mail Server Software | 8.0 (#11) | 7.4 (#28) |
| Security | The feature page lists PGP, two-factor authentication, DKIM/DMARC and spam protection among its email security features. | Project goals include careful validity checks on network input and privilege separation to mitigate possible security bugs. |