Free AI Email Header Analyzer by Mailmodo

Paste your email header below and get it in a human-readable format for analysis.

About Email Headers

Email headers provide detailed information about an email's path from sender to recipient. It can help you troubleshoot email deliverability and credibility issues.

You can learn more about email headers in this detailed guide- What Is an Email Header and What Is It Used For?

How to use this AI Email Header Analyzer Tool?

To use this tool

  1. Copy the email header of the email message you want to analyze.

  2. Paste it in the tool and get its submission.

How to copy email headers for an email message?

Below are quick steps to get the email headers to use in this tool from various email clients.


  1. Open the email in your Gmail account whose headers you want to view.

  2. Click on the three vertical dots in the upper-right corner of the Gmail web app.

  3. Click on 'Show original' from the dropdown menu. This will open a new tab with the email headers and other raw data.

  4. Click on ‘Copy to Clipboard’

Outlook (Web)

  1. Go to Outlook on the web and open the email you want the header for.

  2. Click the three horizontal dots in the upper-right corner of the email.

  3. Select 'View message source' to see the email headers.

Outlook (Desktop)

  1. Open the email you need the header for in the Outlook desktop app.

  2. Click on ‘File’ in the top menu.

  3. Select ‘Properties’ from the options.

  4. Locate the ‘Internet headers’ box. You will find the headers there.

Apple Mail

  1. Open the email you need the header for in the Apple Mail app.

  2. Click on the 'View' menu at the top.

  3. Select 'Message' and 'All Headers' to view the headers.

Yahoo Mail

  1. Open the email you need the header for in your Yahoo account.

  2. Click the three dots in the upper-right corner.

  3. Select 'View raw message' to see the headers.

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