Interesting. The feature is buried at the bottom of this page: https://protonmail.com/security-details https://protonmail.com/security-details Could be quite u

Interesting. The feature is buried at the bottom of this page: https://protonmail.com/security-details https://protonmail.com/security-details Could be quite useful. The biggest problem is the recipient not having a compatible decompresser that can decrypt the archive.