Ooooh, Skitch time!
Nice ones, scifan57!
I discovered this by accident the other day. Evidently, the stock iPad can "Delete All" e-mails versus selecting or swiping them one by one. At least, as tested on my iPad3 and my mom's iPad2 (both running iOS 5.1.1; my mom's is stock). I also have done this with an IMAP account and a POP account.
There is a Delete All (!) option when you are in the Trash section of your e-mail account(s). You have to be in the Accounts section of your e-mail to begin:
Then, navigate to the Trash folder and press the Edit button:
See the "Delete All" button appear at the bottom left:
Press the button, then confirm:
That's it. Couple of button pushes and you are done.
Again, I don't know when this option appeared. It may have been with iOS 5.1, as I was using it on the iPad3 while waiting for the jail break. Regardless, it works and that's all I need.
Marilyn