K-9 Mail vs Spark Mail
| K-9 Mail | Spark Mail | |
|---|---|---|
| Free plan | Yes | |
| Free trial | Yes | |
| Paid from | $8.25/mo | |
| Platforms | Android | Android, iOS, macOS, Windows |
| Free plan | Yes | Yes |
| App coverage | mobile | |
| Unified inbox | Yes | Yes |
| Offline access | Yes | Yes |
| Scheduled sending | No | Yes |
| Calendar tools | No | Yes |
| Paid from | $8.25/user/mo |
Listed together in Best Email Clients