n8n Email Security Automation

Analyze email headers for IPs and spoofing

Automatically detect suspicious email origins and spoofing attempts with this n8n workflow template

Download Template JSON · n8n compatible · Free
Email header analysis workflow screenshot

What This Workflow Does

This n8n workflow automates the analysis of email headers to detect potential security threats. It examines incoming email messages via webhook, extracting and analyzing header information to identify suspicious IP addresses and spoofing attempts.

The workflow splits into two main paths based on the presence of the received headers. One path processes emails with complete header information, while the other handles messages with missing or incomplete headers. This dual-path approach ensures comprehensive analysis regardless of email format.

How It Works

1. Email Receipt via Webhook

The workflow begins by receiving email data through a webhook trigger. This allows it to process messages in real-time as they arrive in your system.

2. Header Extraction

The workflow parses the email headers, extracting critical information including sender IP addresses, routing paths, and authentication results (SPF/DKIM/DMARC).

3. IP Analysis

Extracted IP addresses are checked against known threat databases and blacklists. The workflow flags suspicious origins based on geolocation, reputation scores, and other security indicators.

4. Spoofing Detection

The system compares sender information across different header fields to identify inconsistencies that may indicate spoofing attempts.

5. Alert Generation

When threats are detected, the workflow triggers appropriate alerts through your preferred notification channels (email, Slack, etc.) and can optionally quarantine suspicious messages.

Who This Is For

This workflow is ideal for security teams, IT administrators, and business owners concerned about email-based threats. It's particularly valuable for:

  • Companies handling sensitive customer data
  • Organizations frequently targeted by phishing attacks
  • Teams needing to automate security monitoring
  • Businesses wanting to improve email authentication

What You'll Need

  1. An n8n instance (self-hosted or cloud)
  2. Ability to configure email webhooks
  3. Access to email server logs or headers
  4. Optional: Threat intelligence API access for enhanced IP analysis

Quick Setup Guide

  1. Download the JSON template file
  2. Import into your n8n instance
  3. Configure your email webhook endpoint
  4. Set up notification channels for alerts
  5. Test with sample email messages
  6. Deploy to production environment

Pro tip: Combine this workflow with your existing security tools by adding integrations to your SIEM system or ticketing platform for comprehensive threat management.

Key Benefits

Reduce manual security reviews by 80%: Automatically analyze every incoming email without human intervention, freeing your team for higher-value tasks.

Detect threats faster: Real-time analysis means suspicious messages are flagged immediately, reducing exposure windows.

Improve compliance: Automated logging and reporting helps meet security audit requirements for email monitoring.

Customizable detection rules: Easily adjust the workflow to match your specific security policies and threat models.

Frequently Asked Questions

Common questions about email security and header analysis

Email header analysis helps identify phishing attempts and spoofed messages by examining sender IP addresses and routing paths. It reveals the true origin of emails, helping security teams detect fraudulent messages that appear to come from trusted sources but actually originate from suspicious locations.

Modern email attacks often disguise their true origins through complex header manipulation. Automated analysis can uncover these deception techniques by comparing header fields and verifying authentication results against established security protocols.

Email headers contain valuable metadata including sender IP addresses, routing paths, authentication results (SPF/DKIM/DMARC), timestamps, and mail server information. This data helps verify email authenticity and trace suspicious messages back to their source.

Beyond basic routing information, headers can reveal whether a message passed security checks, the sequence of servers it traveled through, and technical details about how it was composed. This forensic data is essential for investigating security incidents.

Automating email header analysis enables real-time detection of suspicious patterns without manual review. It can instantly flag messages from blacklisted IPs, detect spoofing attempts, and trigger security alerts or quarantine actions based on predefined rules.

Automated systems don't suffer from fatigue or oversight, ensuring consistent application of security policies across all messages. They can also process far greater volumes than human analysts, scaling with your email traffic.

Common spoofing indicators include mismatched sender domains in headers, failed SPF/DKIM checks, suspicious IP locations, multiple hops through unrelated servers, and unusual routing paths. Automated analysis can detect these patterns faster than manual review.

Spoofed messages often show inconsistencies between the "From" address visible to users and the actual sending domain in technical headers. They may also originate from geographic locations inconsistent with your normal business communications.

Automated email analysis reduces security team workload while improving threat detection. It provides consistent monitoring of all incoming messages, generates reports on attack patterns, and helps organizations strengthen their email security policies based on actual threat data.

Beyond security benefits, automated analysis creates an audit trail for compliance purposes and can integrate with employee training systems to highlight real-world examples of phishing attempts for staff education.

Email analysis workflows can integrate with security tools like SIEM systems, threat intelligence platforms, ticketing systems, and employee awareness training programs. They can also connect to CRM and communication platforms to flag suspicious messages.

Common integrations include linking to Active Directory for user verification, connecting to endpoint protection systems for coordinated response, and feeding data into business intelligence tools for trend analysis across communication channels.

Yes, GrowwStacks specializes in building tailored email security automations that integrate with your existing systems. Our team can design workflows that match your specific security policies, threat models, and IT infrastructure for comprehensive protection.

We develop custom solutions that address your unique business needs, whether you require specialized reporting, integration with niche applications, or advanced threat detection algorithms beyond standard implementations.

Need a Custom Email Security Automation?

This free template is a starting point. Our team builds fully tailored automation systems for your specific needs.