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	   I (and many others) use the Reading Pane in Outlook   for a preview of emails.  I also use the fact that a message is 'unread'   as a sign that I need to perform some sort of action on/to it. 
	   I know that I and others find it very annoying that   Outlook automatically marks any message displayed in the Reading Pane as   read.  	      	    Fortunately, we can stop this behaviour.  
	  In Outlook, from the menu, choose Tools, Options, and   then go to the 'Other' tab. Then click the button marked 'Preview Pane'   or 'Reading Pane' (depending upon your version of Outlook). 
	   Remove the tick from the 'Mark items as read when   viewed in the Reading/Preview Pane' option, and click OK, then OK again. 
	   Now, you can preview a message while still leaving   it 'unread'  
	
	  
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