Airmail vs Unibox
| Airmail | Unibox | |
|---|---|---|
| Free plan | Yes | |
| Paid from | $2.50/mo | |
| Platforms | iOS, macOS | macOS, iOS |
| Free plan | Yes | |
| Account limit | 1 accounts | |
| Unified inbox | Yes | Yes |
| Offline access | Yes | |
| Scheduled sending | Yes | |
| Calendar tools | Yes |
Listed together in Best Email Clients