Email Header Analyzer
Analyze email headers for SPF, DKIM, and DMARC authentication results, routing path, and delivery information.
CyberSight runs entirely in your browser. Headers you paste here are analyzed locally and never uploaded anywhere.
Every email service shows headers a little differently. Pick your provider below.
- Open Gmail in a browser.
- Open the email you want to check.
- Click the More icon (⋮) next to Reply.
- Select Show original.
- Click Copy to clipboard, then paste it above.
Works on the Gmail website only, not the mobile app.
Official Google guide (opens in a new tab)New Outlook:
- Click More actions.
- Select View, then View message details.
Classic Outlook:
- Double-click the email to open it in its own window.
- Click File, then Properties.
- The full headers are in the Internet headers box. Select all and press Ctrl+C to copy.
- Open the email.
- Choose View, Message, then All Headers to see extra fields inline, or Raw Source for the full raw text with headers.
- Choose View, Message, then Default Headers to go back to the normal view.
- Open the email.
- Click the More options icon (⋯).
- Select View Raw Message.
- Select the email.
- Choose View, then Message Source (or press Ctrl+U, Cmd+U on Mac).