Email Header Analyzer
Paste raw email headers to decode the delivery path and spot spoofing.
Parses raw email source (headers plus body) into a readable table, extracts From, To, Return-Path, Message-ID and the full Received chain, and flags suspicious inconsistencies such as mismatched Return-Path and From domains.
Headers are processed in memory and never stored by default.
Privacy: Headers are analysed in memory and never stored by default.
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Frequently asked questions
Where do I find raw headers?
In Gmail open the message menu → Show original. In Outlook use View → Message Source. Paste the whole block here.
Are my email headers stored?
No. Headers are processed in memory and never persisted unless you explicitly request storage.