Having pressed the send/receive button in Windows Live Mail (Windows 7), I am unable to delete incoming emails without opening them first.   Previously, on Windows XP and Vista, I could single-click each mail and then press Delete, no problem.   Now, on WLM, if I single-click, the email opens, often stuff I don't want to see.  How can I delete each item, having seen from the sender's name that it would not be of interest?