So the whole "we encrypt your life" thing is pretty nice. But in reality look at what you're actually doing... You have super secure encrypted email to do what? Send unencrypted emails to your friends...
It makes no sense to me... Like, you need an encrypted calendar? Why? What are you getting with encryption that you can't get with using a VPN to connect to your local network and access a self-hosted calendar. In what was is that less secure?
Drive? Sure. VPN? Sure. Password manager? Sure. Documents? Sure. I see the value in having H/A for services like this, but all of that can be self-hosted on an rPi in your basement with a rProxy and a domain.