You Check into Your Friend’s Email and Delete a Draft Saved in It. Should You Be Punished?

So you were bored and checked a friend’s email (you know the password as you helped her set up the email).

So you were bored and checked a friend’s email (you know the password as you helped her set up the email). You accidentally deleted a draft, so you are worried you will be caught. If caught, what should the punishment be, if any?