K-9 Mail vs Roundcube
| K-9 Mail | Roundcube | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | Free |
| Platforms | Android | Linux, self-hosted, Web |
| Free plan | Yes | Yes |
| App coverage | mobile | web |
| Unified inbox | Yes | |
| Offline access | Yes | |
| Scheduled sending | No | |
| Calendar tools | No | No |
Listed together in Best Email Clients