Email Header Analyzer

Email Header Analyzer

Inspect email routing and claimed authentication results locally.

Examine email routing and authentication headers

Works locally in your browser. Pasted headers are not submitted to WordPress or third-party providers. Reports received-hop order, sender and reply-to fields, Message-ID, dates, and declared SPF/DKIM/DMARC results. Authentication-Results headers are claims made by sending or receiving systems; this tool cannot independently verify a message signature.

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