Automated Email Header Analysis and Reputation Check Workflow

This n8n workflow is designed to automate the analysis of email headers received via Gmail, focusing on detecting and evaluating key authentication results and the originating IP address. It enables organizations to verify email legitimacy, identify spammy or suspicious activities, and enhance email security. Starting with a webhook or Gmail trigger, the workflow extracts all relevant email headers, filters for specific headers like ‘Received’, ‘SPF’, ‘DKIM’, and ‘DMARC’, and analyzes their contents. It extracts the originating IP address, cleans it—removing internal IPs—and queries external IP reputation and geolocation APIs for additional context. The processed data includes authentication results, IP reputation scores, geographic details, and spam activity indicators, all consolidated into a structured report. The workflow can operate as an API, seamlessly integrating with third-party platforms to provide real-time email authenticity evaluations, making it highly useful for email security monitoring, spam detection, and compliance verification.