Originally Posted by gbass12 
I have over 400 emails in the trash. Is there anyway to delete them all at once? All I can find to do is swipe them one at a time. This takes awhile. Also in my text messaging... I have several conversations that have been on going for several months. I tried to delete the entire conversation w/ a person and it want delete. When I type a letter for a search the person and all txt are still there. I am going through and deleting the txt one at a time but there are hundreds of them and it is taking for ever. Why can't I through the entire conversation away? This is very aggravating!!!!
Not from the phone client. It is best to do it from your computer email where it is more advanced and have "empty trash" capabilities. This is a mobile version, and it is not as advanced as your Outlooks or Gmails or Yahoos.
On a separate note, why are you worry about deleting trash? It is not taking any resources and as far as I know all of the mail systems automatically delete messages 30 days or older.... My $0.02