Privacy & Security
All analysis is performed locally in your browser. Email headers never leave your device and are not sent to any server.
Email Headers Input
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References & Citations
- IETF. (2014). RFC 7208: Sender Policy Framework (SPF). Retrieved from https://datatracker.ietf.org/doc/html/rfc7208 (accessed January 2025)
- IETF. (2011). RFC 6376: DomainKeys Identified Mail (DKIM). Retrieved from https://datatracker.ietf.org/doc/html/rfc6376 (accessed January 2025)
- IETF. (2015). RFC 7489: Domain-based Message Authentication (DMARC). Retrieved from https://datatracker.ietf.org/doc/html/rfc7489 (accessed January 2025)
- FBI IC3. (2023). Business Email Compromise: The $43 Billion Scam. Retrieved from https://www.ic3.gov/Media/Y2023/PSA230609 (accessed January 2025)
Note: These citations are provided for informational and educational purposes. Always verify information with the original sources and consult with qualified professionals for specific advice related to your situation.
Key Security Terms
Understand the essential concepts behind this tool
Domain Name System (DNS)
The hierarchical naming system that translates human-readable domain names into IP addresses.
Email Headers
Metadata attached to emails that shows routing information, authentication results, and delivery path.
Regular Expressions (Regex)
Pattern-matching syntax used to search, validate, and manipulate text based on rules.
URL/Domain Defanging
A technique to render URLs and IPs non-clickable by replacing characters, preventing accidental access to malicious sites.
⚠️ Security Notice
This tool is provided for educational and authorized security testing purposes only. Always ensure you have proper authorization before testing any systems or networks you do not own. Unauthorized access or security testing may be illegal in your jurisdiction. All processing happens client-side in your browser - no data is sent to our servers.