Kolab Now vs Proton Mail
| Kolab Now | Proton Mail | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | CHF 5/mo | Free |
| Open source | No | No |
| Platforms | Web, Windows, macOS, Linux, iOS, Android | Web, Windows, macOS, Linux, iOS, Android |
| Free plan | No | Yes |
| Mailbox storage | 5 GB | 15 GB |
| Custom domain | Yes | Yes |
| Paid from | — | $12.99/mo |
| Attachment limit | — | 25 MB |
| 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.