Outlook's "Message Options..." menu displays a message's header. Unfortunately, there doesn't seem to be a keyboard shortcut to access this menu.
1. Double-Click on the Quick Access Toolbar's "Customize" icon. (It's almost invisible.)
![capture 015 16122011 132249.png capture 015 16122011 132249.png](/pub/Computing/PictorialHowToViewHeaders/igp_21f0d4c8de7d32b244d2c39ac5622abc_capture_015_16122011_132249.png)
2. Select the "More Commands..." menu item
![capture 016 16122011 132503.png capture 016 16122011 132503.png](/pub/Computing/PictorialHowToViewHeaders/igp_3ec15bcf7d67f98eac2d4ef996c57214_capture_016_16122011_132503.png)
3a. Open the "Choose Commands From..." drop-down menu
3b Select the item "All Commands"
![capture 017 16122011 132726.png capture 017 16122011 132726.png](/pub/Computing/PictorialHowToViewHeaders/igp_a8b590fd4f0bb16192f60ccc2646f79d_capture_017_16122011_132726.png)
4a. Scroll way down in the "Customize" menu
4b. Select the item "Message Options..."
5. Select the "Add >>>" button to add the item to the right-hand "Customize Quick Access Toolbar" pane
6. Select OK
1. Select (single-click highlight) the desired message. Do
not open (double click) the message.
![capture 019 16122011 141625.png capture 019 16122011 141625.png](/pub/Computing/PictorialHowToViewHeaders/igp_033224df45feee9b6b1bfcc98092a5d6_capture_019_16122011_141625.png)
2. In the "Quick Access Toolbar", select the "Message Options..." icon, which opens a (mis-titled) "Properties" popup window.
![capture 022 16122011 141849.png capture 022 16122011 141849.png](/pub/Computing/PictorialHowToViewHeaders/igp_77fc1982717a6add0215f200a42f6f89_capture_022_16122011_141849.png)
3. Scroll through the headers in the lower pane of the "Properties" popup window.