The email header is a code snippet in the HTML email document, which contains information about the sender, the recipient, the email’s route to get to the inbox, and various authentification details.
In order to get the email header in Outlook 2016, kindly perform the steps below:
1. Open the Outlook 2016
2. Double click on the email message so that it is opened in its own window.
3. On the Message tab, in the Options section, there is a little button with an arrow in it. Click on it and you have the message options menu with the internet headers in the bottom section.
4. This will bring up the Message Options window. The last component of this is the Internet Headers.
5. Right-click inside the headers and choose Select All, then right-click again and choose Copy.