Just like the “unsend” feature on WhatsApp, the function would give users two choices – “remove for everyone” and “remove for you” – on Messenger as well. The “remove for everyone” choice would replace the deleted message notifying others on the chat that the message has been removed. Facebook-owned photo-messaging app Instagram already supports the “unsend” capability and allows users to delete a sent message for all participants in the personal or group chat. The prototype feature was first discovered in a prototype code in October 2018 – six months after the social networking giant announced it was in favour of building the “unsend” functionality.

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