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 Everything Xiaomi, Proton Mail scores higher on our published basis.