Email Header Analyzer - Trace Email Delivery Paths
The Email Header Analyzer is a powerful tool that parses raw email headers to reveal the complete delivery journey of your messages. By extracting and interpreting technical information embedded in email headers, you can identify routing paths, detect delays, and troubleshoot delivery issues. Whether you're investigating spam, verifying email authenticity, or diagnosing server problems, this tool provides instant insights into how your emails traveled across the internet.
Paste raw email headers to analyze authentication, routing and email information.
How to Use Email Header Analyzer
The Email Header Analyzer is a straightforward tool designed to help you understand the complete journey of your emails. Simply paste your raw email headers into the analyzer and get instant insights about delivery paths and routing information.
Step-by-Step Guide
- Copy Email Headers: Open your email client and locate the raw email headers (usually found in the message details or source view)
- Paste Content: Copy the entire header content and paste it into the Email Header Analyzer input field
- Click Analyze: Press the analyze button to process the headers instantly
- Review Results: Examine the parsed information including sender details, recipient path, and server timestamps
- Identify Issues: Look for authentication failures, routing delays, or suspicious server hops that may indicate delivery problems
- Export Data: Save or share the analysis results for further investigation or troubleshooting
When to Use Email Header Analyzer
Email header analysis is essential for diagnosing delivery issues and understanding email infrastructure. Here are the primary scenarios where this tool proves invaluable:
- Troubleshoot Delivery Failures: When emails don't arrive in inboxes, analyze headers to identify where the message got stuck or rejected
- Investigate Spam Issues: Determine if your emails are being flagged as spam by examining authentication records and routing paths
- Verify Email Authenticity: Check SPF, DKIM, and DMARC authentication status to ensure emails aren't being spoofed or forged
- Debug Email Forwarding: Trace the complete path when emails are forwarded through multiple servers or accounts
- Monitor Email Security: Detect suspicious routing patterns or unexpected server hops that may indicate compromised accounts
- Optimize Email Campaigns: Analyze headers from marketing emails to understand delivery performance across different ISPs
- Support Email Investigations: Help users and customers understand why their emails were delayed or undelivered
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Technical Information
Email headers contain critical metadata about message routing, authentication, and delivery. Understanding these technical details helps diagnose complex email infrastructure issues.
Key Header Components
- Received Headers: Show the complete delivery path with timestamps from each mail server that processed the message
- Authentication Headers: Include SPF, DKIM, and DMARC results that verify the email's legitimacy and prevent spoofing
- From/To Fields: Display sender and recipient addresses, though these can be spoofed without proper authentication
- Message-ID: Unique identifier assigned by the sending server for tracking and deduplication
- Date Header: Original timestamp when the message was sent, useful for identifying delays
- Return-Path: Specifies where bounce notifications should be sent, critical for delivery monitoring
What the Analyzer Detects
- Delivery Path Visualization: Maps each server hop with timestamps to show the exact route your email took
- Authentication Status: Reports SPF pass/fail, DKIM validation, and DMARC alignment issues
- Routing Anomalies: Identifies unexpected delays, loops, or suspicious server configurations
- ISP Information: Shows which mail servers and ISPs handled your message during delivery