Quell vs Spark +AI
| Quell | Spark +AI | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | Yes |
| Paid from | — | $10/mo |
| Open source | No | No |
| Platforms | Web, Android | Android, iOS, macOS, Windows |
| Free plan | No | Yes |
| Inbox triage | Yes | Yes |
| AI reply drafting | Yes | Yes |
| Automatic sending | No | No |
| Thread summaries | Yes | Yes |
| Follow-up actions | Yes | Yes |
| Paid from | — | 10 /user/mo |
| Email platforms | — | other |
Both are listed in Best AI Email Assistants. On Samsung Mobile US Press, Spark +AI scores higher on our published basis.