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Email diagnostics

Email Header Analyzer

Inspect reported authentication and follow the message’s delivery path.

Paste the full email header
Maximum 200 KB · No content saved

In your mail app, use “Show original”, “View source” or “View message details”. Pasting a complete email is supported; its body is ignored.

Analysis runs on this server. Pasted content is not saved to a database or file and is not sent to an external API.