How can you erase your history on iphone mail?

I need to know how to delete history of my e-mail, not my History Safari on the iPhone. You know, when you go to type in an address on the bar and it shows up all the previous emails from that earlier … How do you clear that?

Resetting the keyboard dictionary erases all words and email addresses that you added -. Choose Settings> General – Reset and tap Reset Keyboard Dictionary "." Http://my-iphone.com/iphone-hints-tips/iphone-resetting-restarting.php

How to Delete Internet History on Apple iPhone 3G/3GS