Proton Mail vs Tau Mail
| Proton Mail | Tau Mail | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Web, Windows, macOS, Linux, iOS, Android | Web, iOS, Android |
| Free plan | Yes | Yes |
| Mailbox storage | 15 GB | 50 GB |
| Email aliases | 10 aliases | — |
| Paid from | — | 8 /mo |
| Encryption scope | — | end_to_end |
| Custom domains | — | Yes |
| Private calendar | — | Yes |
Both are listed in Best Private Email Services. On Freedom251, Proton Mail scores higher on our published basis.