How to view Outlook Headers (2000, XP, 2003 and 2007)

View All Message Headers in Outlook

To have Outlook 2007 show you a message's all header lines:

• Open the email in a new window by double-clicking it.
• Click the expansion button in the lower right corner of the Options toolbar box.
• The box by default holds the Follow Up and Mark as Unread buttons.
• Find the headers under Internet headers

View All Message Headers in Outlook 2000, 2002 and 2003

• Open the message in a new window in Outlook.
• Select View | Options... from the message's menu.
• All header lines appear under Internet Headers at the bottom of the dialog that comes up.