Email Header Analyzer door Libor Benes

Email Header Analyzer is a security-focused Firefox sidebar that turns raw email headers into actionable intelligence - instantly and privately.

Paste any email header and immediately see:
• The real originating IP (with private ranges filtered).
• Every IP address with one-click links to AbuseIPDB, VirusTotal, and IPinfo.
• All email addresses with checks on Have I Been Pwned and EmailRep.io.
• Full Received chain in correct chronological order.
• SPF, DKIM, and DMARC authentication results.
• Clean buttons to copy the original header or full analysis report.

Designed for security analysts, phishing investigators, and abuse teams who need speed without sacrificing privacy.

Privacy & Security First:
• Works 100% offline — perfect for air-gapped environments.
• No network requests, no telemetry, no data collection.
• No unnecessary permissions.
• Built with secure DOM practices (no innerHTML, no eval).
• All processing happens locally in your browser.

Whether you're triaging phishing reports, investigating spam, or analyzing malware campaigns = Email Header Analyzer gives you professional-grade forensic tools in a always-available sidebar, without ever compromising your privacy.