There's also Secret Conversations[1] which can be used in the Messenger app, that implements the Signal Protocol. Ideally people should move off Facebook, but

There's also Secret Conversations[1] which can be used in the Messenger app, that implements the Signal Protocol. Ideally people should move off Facebook, but I don't think most of people's friends (including mine) care about this event that much. [1]: https://www.facebook.com/help/messenger-app/1084673321594605 https://www.facebook.com/help/messenger-app/1084673321594605