With the e-mail trash folder open, long-press a message until you see a check-mark on the left-hand side of the message. Repeat for all messages you want to delete, then press the trash can at the top of the screen. Unfortunately, there isn't a 'delete all' button.
Thanks for you reply, what you said works, but I was hoping to be able to delete all of them at one time.
It took me an hour to delete all of them one at a time.
Seems like the software engineers would have come up with a better way.
Thanks again though for your help.