How do I display and send the full headers of an email message?


  • Outlook 2010 (Windows): Double-click the message to open it in a new window. Select the File tab, and then click Properties
  • Outlook 2007 (Windows): Double-click the message to open it, and then in the Options group, click the dialog box launcher (small square with an arrow). 
  • Outlook Web App (OWA): Double-click the message to open it, and then click the Message Details icon (an envelope with a small document over it). 
  • Outlook 2003 (Windows): From the View menu, select Options... . The message headers are at the bottom of the window, in a box labeled "Headers" or "Internet headers". 
  • Outlook Express, Windows Mail, or Windows Live Mail (Windows): In the message index, right-click the message, and then select Properties. Click the Details tab. 
  • Outlook 2011 (Mac OS X): In your Inbox (or other folder), right-click or control-click the message, and then select View Source
  • Thunderbird 3.x (Windows, Mac OS X): Click View, select Headers, and then choose All
  • Mail (Mac OS X): With the message selected, from the View menu, select Message, and then select either All Headers or Long Headers
  • IU Webmail: While viewing a message, click Message source to open a new window that shows the message, full headers, and any HTML tags. 
  • Imail: Use the OWA interface. If you cannot access the OWA Premium interface from your computer, you can configure a desktop email client to access your account, and then follow the full header display instructions appropriate to your client.
  • Umail: Click the mail message to display it in the message pane. Next to "Reply", click the down arrow, and then click Show original.
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