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