Firefox Relay vs MailMask
| Firefox Relay | MailMask | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Android, extension, iOS, Web | Web |
| Free plan | Yes | Yes |
| Custom domains | No | — |
| Reply from alias | Yes | No |
| Send from alias | No | No |
| Browser extension | Yes | — |
Both are listed in Best Email Alias Services. On Freedom251, Firefox Relay scores higher on our published basis.