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.