Users of Facebook Messenger and Instagram services will be able to send self-destructive messages. This will be reported by Facebook developers.
Disappearing messages are similar to those in other messengers, but they also have their own differences. In Vanish Mode, the message is deleted after the conversation partner has left the dialog. The user will be warned if his conversation partner took a screenshot of the conversation in secret mode.
Facebook Messenger has already received a similar option for chat rooms as long as it is available only for the USA. Secret chats will appear on Instagram soon.