[fleischhauf]

as far as I understand they want the software on your device, at one point you need to decrypt if you want to read the message content

[mort96]

This illustrates why I'm so skeptical of all these "end to end encrypted" closed source solutions like WhatsApp: yes, they're end to end encrypted so the server doesn't necessarily get to see what's going on, but what's the point in that when I can't trust the client?