[snoutie]

I personally like the approach Threema has. They provide their own push serice called Threema Push[1] which is opt-in for google play store version. The push notifications for Threema do not contain any sensitve information either way.[2] They also have a libre version on F-Droid.

[1]https://threema.ch/en/faq/threema_push

[2]https://threema.ch/en/faq/privacy_push

[martinsnow]

Their web client is based on angular.js - i wouldn't dare trust it with private information.

[snoutie]

I'm not a huge expert on web frameworks. Can you clarify your concerns?

[orangepurple]

Threema may very well be the Crypto AG of our times

[keep_reading]

Why would you say that? It's open source and has reproducible builds