Doesn't stop the email with the original message though (you can get emails of messages). I once saw a coworker cussing out someone while the coworker was asleep. By the time we all woke up, the message had been edited into something nice and cordial. But knowing how much they were actually frustrated was a hint (at least to me) that I needed to take the cordial response seriously.

Being able to see the original message someone shot off in anger and then revised into something nice is really handy as a manager. Especially if the entire team is remote and you can't tell things by body language.