Whatsapp delete message feature

You can only delete messages for everyone for up to seven minutes after sending. Once seven minutes have passed, there is no way to delete messages for everyone - Sakshi Post

WhatsApp Now Lets You ‘Undo’ Messages 

Nov 01, 2017
The popular Internet-based messaging service is now making that possible with its latest update, albeit if you do so within seven minutes of sending the message.
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