Proton Mail vs Secure-Email.org
| Proton Mail | Secure-Email.org | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | €4.17/mo |
| Open source | No | No |
| Platforms | Web, Windows, macOS, Linux, iOS, Android | Web |
| Free plan | Yes | No |
| End-to-end encryption | Yes | Yes |
| Custom domain | Yes | — |
| Mailbox storage | 15 GB | 0.5 GB |
| Email aliases | 10 aliases | 10 aliases |
| Encrypted calendar | Yes | — |
| Mail protocol support | bridge | — |
Both are listed in Best Secure Email Providers, Best Email Providers. On Samsung Mobile US Press, Proton Mail scores higher on our published basis.