There is no way that an open IM platform will be able to guarantee E2E by default on all clients simply because someone/somewhere will produce a client that doesn't or doesn't do it properly. It is probably better to start with the E2E encryption system (in my example OMEMO) and then see where you can get it.
* https://omemo.top/
There is no way that an open IM platform will be able to guarantee E2E by default on all clients simply because someone/somewhere will produce a client that doesn't or doesn't do it properly. It is probably better to start with the E2E encryption system (in my example OMEMO) and then see where you can get it.