Display and send the full headers of an email message

If you need to send the information in the full headers of an email message (to report possible phishing or spam, for example):

  1. Follow the appropriate instructions below to first display the message 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.
    • 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.
    • 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.
    • Outlook for macOS: In your Inbox (or other folder), right-click or control-click the message, and then select View Source.
    • Thunderbird (Windows, macOS): Click View, select Headers, and then choose All.
    • Mail (macOS): With the message selected, from the View menu, select Message, and then select either All Headers or Long Headers.
    • Gmail at IU: See Trace an email with its full headers.
  2. Copy and paste that information into the email message you wish to send.

For information about reporting spam and phishing scams, see If you receive spam.

This is document adix in the Knowledge Base.
Last modified on 2020-02-18 14:11:32.

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