How to access an email's header for troubleshooting

Last updated: March 11, 2025

Overview

If you're experiencing deliverability issues, it's helpful to share the original email's header HTML details so our team can troubleshoot.

Read on for instructions on how to view and share the raw HTML for the most common email providers:

Gmail

  1. Open the message and click "..." (the 3 vertical dots) in the top right of the message window

  2. Choose Show original

  3. Copy and paste the HTML into a text editor tool (like TextEdit or Notepad++)

  4. In your text editor tool, click File then Save As... choose .txt and send that file to Sendlane!

Yahoo

  1. Open the message and click "..." (the 3 horizontal dots) in the top middle of the message window 

  2. Choose View raw message

  3. In your browser window, click File then Save Page As...

  4. Choose .txt and send that file to Sendlane!

Outlook Desktop App

  1. Open the message, click the Actions menu, then Other Actions and then View Source

  2. Use the File menu to Save As a .txt file and send that file to Sendlane!

  3. Depending on your version of Outlook, you may have the Forward as Attachment option under either the Actions menu, the Other Actions menu, or by right clicking on the message and choosing More Actions.

Outlook

  1. Open the message, click "..." (the 3 horizontal dots) in the top right of the message window

  2. Click View

  3. Click View Message Source

  4. Copy and paste the HTML into a text editor tool (like TextEdit or Notepad++)

  5. Save the file as TXT

Mac Mail

  1. Select the message, then under the View menu, choose Message, then Raw Source

  2. Once you have the original message displayed, use the File menu to Save As a plain text file and send that file to Sendlane!

AOL

  1. Double click the email to display it in its own window

  2. Click the More menu in the toolbar

  3. Click View Message Source

  4. Use the File menu to Save As a plain text file and send that file to Sendlane!