Wonderstacked

Security

Email Header Analyzer

The Email Header Analyzer parses raw message headers to expose delivery hops, authentication results, addressing, timing, and likely routing anomalies. It gives an immediate, focused result with no signup, explains the important limits beside the output, and keeps the workflow as private as the implementation allows.

Last updated · Free, no signup

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What can an email-header analyzer reveal?

An email-header analyzer turns raw RFC 5321 and RFC 5322 fields into a readable delivery path, showing Received hops, timestamps, addressing, message identifiers, and authentication results. It helps investigate delays, spoofing indicators, forwarding behavior, and which systems handled a message before it reached the mailbox.

Parsing happens in the browser, so pasted headers stay on the device. Headers added before the first trusted mail server can be forged, and a displayed pass or fail must be interpreted in the context of the trusted Received chain and provider-added Authentication-Results fields. The tool does not inspect message-body malware.