HEY Calendar vs Proton Mail
| HEY Calendar | Proton Mail | |
|---|---|---|
| Free plan | No | Yes |
| Paid from | $8.25/mo | Free |
| Platforms | Web, Windows, macOS, Linux, iOS, Android | Web, Windows, macOS, Linux, iOS, Android |
| Free plan | No | Yes |
| Mailbox storage | 100 GB | 15 GB |
| Custom domain | No | Yes |
| Email aliases | No | Yes |
| Ad-free inbox | Yes | Yes |
| Platform access | web_mobile_desktop | |
| Paid from | $12.99/mo | |
| Attachment limit | 25 MB | |
| Storage per mailbox | 15 GB | |
| End-to-end encryption | Yes | |
| Encrypted calendar | Yes | |
| Mail protocol support | bridge |
Listed together in Best Personal Email Services