Proton Mail vs Runbox
| Proton Mail | Runbox | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | €1.66/mo |
| Open source | No | No |
| Platforms | Web, Windows, macOS, Linux, iOS, Android | Web, iOS, Android |
| Free plan | Yes | No |
| Paid from | $12.99/mo | — |
| Mailbox storage | 15 GB | 2 GB |
| Attachment limit | 25 MB | — |
| Custom domain | Yes | Yes |
| Email aliases | Yes | — |
| Ad-free inbox | Yes | — |
Both are listed in Best Personal Email Services, Best Private Email Services, Best Secure Email Providers, Best Email Providers. On The Geeks Club, Proton Mail scores higher on our published basis.