Pretty sure you heard about Signal, community around this messenger talks about ideas to bring crypto into their ecosystem. I think Incognito is the best possible option to be integrated in the privacy-focused messenger.
To push this idea to Signal users and the core team, we need to have a working demo (generate a private key, receive and send functions).
Looking for devs who will be able to make it happen on one of the available platforms (iOS, Android, or Desktop) https://github.com/signalapp
Beside the Signal, integration with other privacy messengers will be highly appreciated.