Checker Plus for Gmail vs Sparrow
| Checker Plus for Gmail | Sparrow | |
|---|---|---|
| Free plan | Yes | Yes |
| Paid from | Free | Free |
| Platforms | extension | Linux, macOS, Windows |
| Free plan | Yes | Yes |
| App coverage | desktop | desktop |
| Offline access | Yes | Yes |
| Calendar tools | Yes | Yes |
| Unified inbox | Yes | |
| Scheduled sending | Yes |
Listed together in Best Email Clients