Email Header Analyzer
Paste raw email headers to trace the delivery path, SPF, DKIM and DMARC results, origin IP and spam signals.
Unfolds continuation lines, decodes RFC 2047 encoded words (=?UTF-8?B?…?=), extracts SPF/DKIM/DMARC declarations, Received hops and DKIM signing metadata. Runs fully client-side.
About Email Header Analyzer
Paste raw email headers to trace the delivery path, SPF, DKIM and DMARC results, origin IP and spam signals.
Email Header Analyzer does the security work in your browser using well-known algorithms, so sensitive input never has to be sent to a remote server.
How to Use Email Header Analyzer
- Enter the secret text, file or value you want to process.
- Choose the algorithm, key or options required.
- Run the operation — the output appears instantly and locally.
- Copy the result safely.
Key Features
- Encryption and hashing run locally — your secrets stay on your device.
- Uses established, well-documented algorithms and standards.
- No account, no key storage, no data retention.
Frequently Asked Questions
Is Email Header Analyzer safe to use with sensitive data?
Yes. Email Header Analyzer runs entirely inside your browser using in-page cryptography, so your inputs are never uploaded, logged or shared.
Is Email Header Analyzer free to use?
Yes. Email Header Analyzer is completely free with unlimited use — no account, download or payment required.
Is my data uploaded to a server?
No. Email Header Analyzer runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.
Does Email Header Analyzer work on mobile?
Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.
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