Analyze suspicious email headers for spoofing, authentication failures, and threat indicators. Paste your headers below for instant analysis.
Paste headers below or upload an email file
Copy the full email headers from your email client and paste them above. All analysis runs entirely in your browser. Email files (.eml, .msg) are processed locally and never uploaded to any server.
Authentication & Trust
Header Forensics
Content Analysis
Attachment & Media
Threat Intelligence
AI-Powered Analysis
* Limited on free tool — full analysis available via API. All heuristic checks run locally in your browser.
Copy the full email headers from your email client (Gmail, Outlook, Thunderbird, etc.) and paste them into the text area above.
The checker parses authentication records (SPF, DKIM, DMARC), traces the email route, extracts IOCs, and detects spoofing patterns.
Receive a risk score (0-100) with a clear verdict, key findings, and recommended actions based on the analysis.