At one time or another, we've all accidentally sent an e-mail, probably by invoking the keyboard shortcut.
I would definitely be waiting to have my emails delayed a few seconds if Gmail would momentarily display an Undo option. This would mean that the email wouldn't even be sent until after the Undo option expired, so we wouldn't need to worry about the email protocol.
I would definitely be waiting to have my emails delayed a few seconds if Gmail would momentarily display an Undo option. This would mean that the email wouldn't even be sent until after the Undo option expired, so we wouldn't need to worry about the email protocol.