Pigeon post · Suspicious deliveries desk
Email header inspector
Carrier pigeons used to deliver the mail. This one checks the route. Paste the original headers to see where your message travelled and what the mail servers reported.
Message headers
Up to 256 KiB. Message bodies are ignored. Outlook .msg files aren’t supported. No stamp required.
Read the evidence, not just “pass”.
Headers can be forged. A reported “pass” doesn’t make an email safe; a “fail” doesn’t prove it’s malicious. This tool reads reported results. It doesn’t check DNS or verify signatures.
Nothing leaves until you open a lookup.
Analysis stays in this browser. External links show the indicator and destination before opening. That provider may retain the indicator. Local and reserved indicators have no lookup links.