Is there a delete all feature in the email client?

I have a Comcast email account on my email client with on my Nokia Lumia 928 and I have a bunch of email in my inbox. I was wondering if there was a delete all function so I can delete all my emails. Its a pain clicking every single box by the email to delete them.

Thanks

There doesn't seem to be this feature on WP8. Probably the easiest thing to do is to login on the email website, delete them there and then do a sync.

If you don't want the account anymore on your phone just delete it off your phone. Everything will go with it.