About this tool
Paste raw headers or EML text to inspect Received hops, time differences and reported authentication.
Review the result for your task before using it elsewhere.
Headers can be forged. Reported SPF, DKIM and DMARC results are not independently verified.
Frequently asked questions
How do I use this tool?
Paste raw headers or EML text to inspect Received hops, time differences and reported authentication. Review the result for your task before using it elsewhere.
What limitations should I check first?
Headers can be forged. Reported SPF, DKIM and DMARC results are not independently verified.