DNS & email
Email header analyzer
Paste an email’s full headers to see where it really came from, every server it passed through, and whether it’s authenticated.
How do I get the headers?
- Gmail: open the message → ⋮ (More) → Show original → Copy to clipboard.
- Outlook (web): open the message → ⋯ → View → View message source.
- Outlook (desktop): open the message → File → Properties → Internet headers.
- Apple Mail: View → Message → All Headers (or Raw Source).
- Yahoo: open the message → ⋯ → View raw message.