Free Email Header Analyzer
December 02, 2025 • security
Analyze Email Headers to Spot Phishing
Email headers reveal the true origin of every message. Paste your email headers below to check SPF, DKIM, and DMARC authentication, trace the message route, and identify red flags that could indicate phishing or spoofing attempts. All analysis happens in your browser.
Email Header Analyzer
All analysis is done locally in your browser — headers are never sent to any server
security
admin is a senior staff writer for Government Technology. She previously wrote for PYMNTS and The Bay State Banner, and holds a B.A. in creative writing from Carnegie Mellon. She’s based outside Boston.
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