When I am entering the To: field a bunch of email addresses automatically pop up. Some of them are old and no longer work. For example my one friends old and new email addresses pop up. Is there a way to delete old addresses that I no longer use or need. they are not saved to anyone's contact information and just seem to be cached. On outlook I can just hit delete when they pop up but it doesn't seem to be that way on here. Any suggestions? thanks.