K-9 Mail vs Spike
| K-9 Mail | Spike | |
|---|---|---|
| Free plan | Yes | |
| Free trial | No | |
| Paid from | $4/mo | |
| Platforms | Android | Android, iOS, macOS, Web, Windows |
| Free plan | Yes | Yes |
| App coverage | mobile | all |
| Unified inbox | Yes | Yes |
| Offline access | Yes | |
| Scheduled sending | No | Yes |
| Calendar tools | No | Yes |
| Paid from | $4/user/mo | |
| Account limit | 3 accounts |
Listed together in Best Email Clients