33Mail vs Firefox Relay
| 33Mail | Firefox Relay | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | $1/mo | Free |
| Open source | No | No |
| Platforms | Web | Android, extension, iOS, Web |
| Free plan | Yes | Yes |
| Paid from | 1 /mo | — |
| Custom domains | Yes | No |
| Reply from alias | Yes | Yes |
| Send from alias | No | No |
| Browser extension | Yes | Yes |
Both are listed in Best Email Alias Services. On The Geeks Club, 33Mail scores higher on our published basis.