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Display Mail Message Full Headers

If you have an Office 365 email account or a Google Apps at York email account you can directly report the headers of the phishing / spam message as per instructions located at Information Security website about reporting phishing:

Alternatively, you can follow the steps below for the appropriate mail client to view the full headers of an email:

    • Google Apps at York: See Trace an email with its full headers.
    • Microsoft Outlook for Windows: Double-click the message to open it in a new window. Select the File tab, and then, at the bottom, click Properties. The data is next to Internet headers.
    • Mail (Microsoft Store App): The Windows 10 Mail client is lightweight and not fully featured. Viewing email headers in Mail is not possible at this time.
    • Mail (macOS): With the message selected, from the menu, select Message, and then select either All Headers or Long Headers.
    • Outlook Web App (OWA): Double-click the message to open it. Click the options icon (three dots near the top right), and then click View Message Details.
    • Outlook for macOS: In your Inbox (or other folder), right-click or click the message, and then select View Source.
    • Thunderbird (Windows, macOS): Click View, select Headers, and then choose All.

Once you have obtained the full mail headers, you can copy and paste that information in an email and send it to