Inbox Monster vs Litmus
| Inbox Monster | Litmus | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | Yes |
| Paid from | $312.50/mo | $99/mo |
| Open source | No | No |
| Platforms | Web | api, extension, Web |
| Free plan | No | No |
| Email clients | 120 clients | 100 clients |
| Device coverage | both | both |
| Spam checks | Yes | Yes |
| Accessibility checks | Yes | Yes |
| Link checks | Yes | Yes |
| Inbox testing | Yes | Yes |
| API access | Yes | Yes |
Both are listed in Best Email Testing Software. On Everything Xiaomi, Inbox Monster scores higher on our published basis.