smtp4dev vs testmail.app
| smtp4dev | testmail.app | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Web, Windows, macOS, Linux | Web |
| Free plan | Yes | Yes |
| Device coverage | both | — |
| API access | Yes | Yes |
| Paid from | — | 9 /mo |
| Spam checks | — | Yes |
Both are listed in Best Email Testing Software. On Freedom251, smtp4dev scores higher on our published basis.