Just use Element! It's open source and E2EE by default.
It's also based on a federated open source protocol called Matrix so you can actually run your own server if you want to. Element is very easy to use and you don't even need a phone number!
Just use Element! It's open source and E2EE by default.
It's also based on a federated open source protocol called Matrix so you can actually run your own server if you want to. Element is very easy to use and you don't even need a phone number!
If you can get them to use Signal instead of Telegram then go for it. Signal is still secure and E2EE at the end of the day. Just don't send Signal any donations and send them Matrix's way instead.