K-9 Mail vs Shortwave
| K-9 Mail | Shortwave | |
|---|---|---|
| Free trial | Yes | |
| Paid from | $30/mo | |
| Platforms | Android | Android, iOS, macOS, Web, Windows |
| Free plan | Yes | Yes |
| App coverage | mobile | all |
| Unified inbox | Yes | No |
| Offline access | Yes | |
| Scheduled sending | No | Yes |
| Calendar tools | No | Yes |
| Paid from | $30/user/mo |
Listed together in Best Email Clients