Facebook Messenger had rolled out a new feature which could allow its users to
unsend messages.

At the moment, the new feature is available only for users in Colombia, Poland, Bolivia, and Lithuania; it’s expected to be rolled out to other parts of the world soon.

You can use the new feature to remove a message from recipients’ inboxes within 10 minutes of sending it. After that time limit, you can still delete the message from your window, but it will remain in the recipients’ inboxes.

But even after deleting a message, Facebook will retain it a little longer to check if it has been marked for abuse.

As Facebook’s head of Messenger Stan Chudnowsky noted in his interview with TechCrunch :
"We need to make sure we don’t open up any new venues for bullying. we need to make sure people aren’t sending you bad messages and then removing them because if you report them and the messages aren’t there we can’t do anything"

However, the new feature is different from the one used to delete Zuckerberg’s old messages seven months ago. Then, the messages deleted were not restricted by a time limit of 10 minutes, and a “tombstone”- a note indicating that a message was deleted – was also not left behind. So that still remains a showcase of privilege that the masses can’t enjoy.

Source: https://www.gobuzzblog.com/you-can-now-unsend-messages-on-facebook-messenger/
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