I am running Windows 7 and Windows Mail Live is my default email.  When I open Live Mail, 3 columns are displayed.  From left to right those  columns are folders, list of emails in my inbox, and the view pane.  Whenever I click on an email in the list, the email is automatically opened.  How do I stop this from happening?

I have looked in options, but no such choice is there.  I want to be able to delete or junk an email BEFORE it is opened, to prevent any malware, viruses, or other unwanted actions from occurring.  Can anyone tell me how to do this?

Sharon