To view Outlook email headers

Outlook 2007

Method #1 (best): If you don't have the message open, right click on the message in your inbox and choose "Message Options".
Method #2:

·        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:.

Outlook 2003

Method #1: Right-click the message in the folder view, then choose Options.
Method #2: In an open message, choose View | Options. 

With either method, you'll see the Internet headers portion of the Message Options dialog.

Outlook 2000, Outlook 2002

Method #1: Right-click the message in the folder view, then choose Options.
Method #2: In an open message, choose View | Options. 

With either method, you'll see the Internet headers portion of the Message Options dialog.

Outlook 98

In an open message, choose View | Options. Look at the Internet headers portion of the Message Options dialog.

Outlook 97

With the Internet E-mail service or Microsoft Exchange Server service:
Open any message and look for Internet headers on the Options tab. If you don't see the Options tab, choose View | Message Header to display it.

With the older Internet Mail service: Select a message in the folder view, or open a message, then choose File | Properties, and switch to the Internet tab. If you don't see the Internet tab, choose Tools | Options from the main Outlook menu. Switch to the General tab, and click the Add-In Manager button. Click Add, and select the Minet.ecf. Close all the dialog boxes. You should now be able to view the Internet tab.