MailFlow vs Spike
| MailFlow | Spike | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | $4/mo |
| Open source | No | No |
| Platforms | Web | Android, iOS, macOS, Web, Windows |
| Free plan | Yes | Yes |
| Inbox triage | Yes | — |
| AI reply drafting | Yes | — |
| Automatic sending | No | — |
| Paid from | — | 4 /user/mo |
Both are listed in Best AI Email Assistants. On Samsung Mobile US Press, Spike scores higher on our published basis.