Email Header Analyzer
This Email Header Analyzer parses raw email headers to extract SPF, DKIM, and DMARC authentication results. It helps diagnose email spoofing, delivery failures, and authentication misconfigurations instantly.
About This Tool
The Email Header Analyzer helps you inspect raw email headers to verify authentication results and detect potential spoofing attempts. By analyzing technical header data, this tool extracts SPF, DKIM, and DMARC authentication results instantly.
Email headers contain critical routing and verification information that determines whether a message is legitimate or forged. Understanding these details helps diagnose email delivery failures, phishing attempts, and domain spoofing risks.
This tool allows you to:
- Check SPF authentication results
- Verify DKIM signature status and selector
- Analyze DMARC enforcement policy
- Detect sending IP address (IPv4 or IPv6)
- Understand overall email security strength
The analysis is performed instantly inside your browser session. No email header data is stored, logged, or shared.
Frequently Asked Questions
What is an email header?
An email header is the technical metadata attached to every email message. It contains routing details, authentication results, sending server information, timestamps, and verification records used to determine message legitimacy.
How do I get an email header from Gmail?
Open the email in Gmail, click the three dots next to the reply button, and select “Show original.” Copy the entire header and paste it into this analyzer tool.
What does SPF pass mean?
SPF pass means the sending server is authorized by the domain’s SPF record to send email. It confirms that the message was sent from an approved source.
What does DKIM pass mean?
DKIM pass means the email’s digital signature is valid and has not been altered during transmission. It verifies message integrity and domain authenticity.
What does DMARC policy none mean?
DMARC policy none means the domain is monitoring authentication results but is not enforcing protection. Emails that fail SPF or DKIM will not be rejected or quarantined.
Can this tool detect email spoofing
Yes. If SPF, DKIM, or DMARC fail, it may indicate spoofing or authentication misconfiguration. The tool highlights authentication failures and policy weaknesses.
Is my email header stored?
No. This tool processes the header in real time and does not store or log any email data.
