DuckIntel / Security Tools
Compare two sets of email headers side by side. Highlights differences in authentication, routing, and key headers. Detects suspicious changes.
Compare two sets of email headers side by side. Highlights differences in authentication, routing, and key headers. Detects suspicious changes.
Compare two email header sets side by side. Highlights differences, authentication mismatches, and suspicious changes to From, Reply-To, Return-Path and routing headers.
Email Header Diff Tool is part of DuckIntel, a free browser-based cyber intelligence platform with 59 security tools for SOC analysts, IT administrators, and security professionals. No login or account is required. All tools run entirely in your browser — your data never leaves your machine.
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Part of DuckIntel.io — 59 free browser-based security tools for SOC analysts. No login. No tracking. 100% client-side.