// TOOL
Email Header Analyzer
Paste raw email headers to trace delivery path, timing and SPF/DKIM/DMARC results.
ABOUT THIS TOOL
Use the WaooTools Email Header Analyzer to inspect the technical information included in an email header. Paste an email header into the tool to review sender details, mail servers, delivery timestamps, routing information, and available authentication results.
This tool is useful for troubleshooting email delivery, investigating suspicious messages, checking mail server paths, and understanding how an email reached your inbox.
How to Use Email Header Analyzer
- Open the email you want to inspect.
- Copy its complete email header.
- Paste the header into the Email Header Analyzer.
- Click the Analyze or Check Header button.
- Review the extracted information and analysis results.
- Use the findings to investigate delivery, routing, or authentication issues.
What Is an Email Header?
An email header is a section of an email that contains technical information about the message. It may include the sender and recipient addresses, subject, message ID, sending and receiving servers, timestamps, and authentication results.
Email headers are different from the visible email body. They help mail systems deliver messages and provide information about the path an email followed between servers.
What Does This Tool Check?
The Email Header Analyzer may help you review:
- From and sender information
- To and recipient information
- Subject and message ID
- Sending and receiving mail servers
- Received headers
- Email delivery path
- Server hostnames and IP addresses
- Date and time information
- Return-Path
- Reply-To
- SPF authentication results
- DKIM authentication results
- DMARC authentication results
- Mail transfer information
- Possible routing or delivery issues
Understanding Email Authentication
SPF
Sender Policy Framework checks whether the sending server is authorized to send email for a domain.
DKIM
DomainKeys Identified Mail uses a digital signature to help verify that an email was sent by an authorized system and was not changed during delivery.
DMARC
Domain-based Message Authentication, Reporting, and Conformance uses SPF and DKIM results to help domain owners manage email authentication and reduce spoofing.
Authentication results can provide useful information, but they should be interpreted together with the complete header and the email’s context.
Why Analyze Email Headers?
Troubleshoot Delivery Problems
Review mail servers, timestamps, and routing information when an email is delayed, rejected, or delivered unexpectedly.
Investigate Suspicious Emails
Inspect the technical details of an email to identify inconsistencies or unusual routing information.
Check Authentication
Review available SPF, DKIM, and DMARC results to understand whether the message passed common email authentication checks.
Identify Mail Servers
Find the servers involved in sending and receiving the email.
Understand Email Routing
Follow the available Received headers to see how the message moved between mail servers.
Support Email Administration
Help developers, system administrators, and email professionals investigate mail flow and configuration issues.
Important Limitations
- The tool can only analyze the header information you provide.
- A header does not always reveal the true identity of the sender.
- Sender addresses can be forged or displayed deceptively.
- IP addresses and locations may belong to mail servers, hosting providers, VPNs, or relay services.
- SPF, DKIM, or DMARC results do not guarantee that an email is safe.
- Some email clients remove, hide, or modify parts of the original header.
- Header formats and available fields vary between email providers.
- The analysis does not replace a complete malware, phishing, or security investigation.
- Avoid sharing headers that contain sensitive personal or business information.
FAQ