With these new WhatsApp coming features called Edit and Unsend will always save you from embarrassment because, you might have send messages to one of your WhatsApp friend or your Boss at work, who is not supposed to receive the message. So what can you do in this situation?
Well, it was also said to have appeared on WhatsApp beta version 184.108.40.2069 on iOS.
When you send a message, you can Recall back the message which means you can Unsend the message and it will be deleted from your conversation and the other friend conversation too.
So this feature will make alot of sense to those who owns groups because you will be able to Revoke and edit your sent messages which will be deleted without showing again forever.