Purpose

This is to show how to properly display full email header when submitting a ticket to IGPP Helpdesk. Applying this data to your ticket help IGPP Helpdesk get to the root of your issue more efficiently.

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Apple Mail.app 

1. In /Applications/Mail.app Open the email of interest.
2. Click on the "View" dropdown option. 
3. Hover over the "message" tab to extend menu. 
4. Select "all headers" option.Navigate to Mail.app > View > Message > All Headers
5. Copy Header data and paste it in comment in the ticket. 

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You can also enable this feature with the Key command "Shift, command-Command-H".

Gmail Web Client

https://support.google.com/mail/answer/29436?hl=en