[kingstnap]

This is what Google also claims as end to end encrypted in their Gmail end to end thing. Many people including me mentioned this in the comments.

https://news.ycombinator.com/item?id=45458482

Its entirely their end to their end encrypted. You don't get any privacy.

[fc417fc802]

Use our new open source (modification and redistribution not permitted) app to exchange end-to-end encrypted (from your client to our server) messages with your friends! Having all your data on our service protects your data sovereignty (we do not provide for export or interop) by guaranteeing that you always have access to your full history! Usage also protects your privacy (we analyze your data for marketing purposes) by preventing unscrupulous third parties from analyzing your data for marketing purposes.

If we had competent regulators this sort of blatant willful negligence would constitute false advertising.