Aster Mail vs Proton Mail
| Aster Mail | Proton Mail | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | $2.42/mo | Free |
| Open source | Yes | No |
| Platforms | Android, iOS, Linux, macOS, Web, Windows | Web, Windows, macOS, Linux, iOS, Android |
| Free plan | Yes | Yes |
| Mailbox storage | 50 GB | 15 GB |
| Email aliases | 15 aliases | 10 aliases |
Both are listed in Best Private Email Services, Best Secure Email Providers, Best Email Providers. On Samsung Mobile US Press, Proton Mail scores higher on our published basis.