MailStore Server vs Open Archiver Enterprise
| MailStore Server | Open Archiver Enterprise | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | Yes | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | api, self-hosted, Web, Windows | api, Linux, self-hosted, Web |
| Free plan | No | Yes |
| Retention period | unlimited | — |
| Legal hold | Yes | Yes |
| eDiscovery tools | Yes | Yes |
| Journal capture | Yes | Yes |
| Deployment | on-premises | — |
| Search and export | EML, MSG, PST | Full-text search across email and attachments; EML export |
Both are listed in Best Email Archiving Software. On Samsung Mobile US Press, Open Archiver Enterprise scores higher on our published basis.