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  3. Forwarding Full Mail Headers

Forwarding Full Mail Headers

In most situations, people are interested in seeing only the first few headers on a message (From, To, Cc, Subject, and Date), so most email clients display only those headers when the recipient reads the message or forwards it. The rest of the headers are masked.

Unfortunately, the above headers are easy to forge, and this commonly occurs in cases of phishing and spam email. Fortunately, the Received: headers are extremely difficult to forge and can be used to identify the source of the offensive email.

If you need to report a Proofpoint email filter error, abuse, phishing or other potentially harmful communication, you will need to send a copy of the email as an attachment.

  • abuse@uvm.edu – for targeted phishing, or email scams.
  • not-spam@uvm.edu – for False Positives (email that was sent to Junk that should have been delivered to your INBOX).
  • is-spam@uvm.edu – for False Negatives (email that was delivered to your INBOX but should have gone to Junk)

Full headers allow our Help Desk and Information Security team to track a message back to the IP address from which it was sent; a message without full headers cannot be tracked.

Not sure if an email is legitimate?

This method is for reporting phishing attempts. If you’re trying to ask about a suspicious email’s authenticity, please call (802) 656-2604 to have someone at the Tech Team to take a look with you.

Use the appropriate guide below to forward the message in question as an attachment, which will keep all email header info intact.

Outlook Online

  1. Log in to Outlook Online.
  2. Select the message you wish to forward as an attachment.
  3. Open the drop-down menu in the upper-right corner to the right of the sender, hover over Other reply actions, and select Forward as attachment.
    Exchange Online Forward as attachment menus
  4. Enter the email address you wish to forward the message to, enter a message body, and then click the Send  icon.

Outlook for Windows

Outlook for Windows app icon

  1. Select the message you wish to forward as an attachment.
  2. Select the Home tab.
  3. Click the down arrow () to the right of the forward arrow (), and then select Forward as attachment.
    Forward drop-down menu with Forward as attachment highlighted
  4. Enter the email address you wish to forward the message to, enter a message body, and then click Send.

Outlook (classic) for Windows

Outlook Classic app icon

  1. Select the message you wish to forward as an attachment.
  2. Select the Home tab.
  3. Ensure the Classic Ribbon is selected by clicking the down arrow () in the upper-right corner and selecting Classic Ribbon.
    Ribbon Layout menu with Classic Ribbon highlighted
  4. Open the More Respond Actions drop-down to the right of Forward, and then select Forward as Attachment.Outlook 365 more message options
  5. Enter the email address you wish to forward the message to, enter a message body, and then click Send.

Outlook for macOS

Outlook app icon

  1. Right-click (or control-click) on the message you wish to forward as an attachment.
  2. Click Forward as Attachment as shown in the screenshot below.
    Message context menu with Forward as Attachment highlighted
  3. Enter the To address you wish to forward the message to, enter a message body, and click Send.

(legacy) Outlook for macOS

Outlook app icon

  1. Select the message you wish to forward as an attachment.
  2. Click the icon of an envelope with a paperclip to the right of Forward to Forward this message as attachment.Forward this message as attachment button
  3. Enter the email address you wish to forward the message to, enter a message body, and then click Send.

Mozilla Thunderbird

  1. In Thunderbird, right-click on the message you wish to forward as an attachment.
  2. Click Forward and Redirect > As Attachment as shown in the screenshot below.
    Thunderbird message context menu with Forward and Redirect and As Attachment highlighted
  3. Enter the To address you wish to forward the message to, enter a message body, and click Send.

Apple Mail

Apple Mail app icon

  1. Right-click (or control-click) on the message you wish to forward as an attachment.
  2. Click Forward as Attachment as shown in the screenshot below.
    Apple Mail message context menu with Forward as Attachment highlighted
  3. Enter the email address you wish to forward the message to, enter a message body, and then click the Send Message button.

Updated on March 19, 2026

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