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