Email Header Analyzer

Analyze raw email headers to trace the sender IP address, mail routing hop latency, and verify SPF, DKIM, and DMARC alignment security metrics.

This interactive client-side tool is part of the NervLink Cybersecurity Suite. All analysis is verified entirely inside the local browser sandbox for maximum safety and data privacy compliance.

How It Works

1. Paste the raw headers of an email into the input container.
2. The tool extracts headers like Subject, From, To, and Date.
3. Authentication results for SPF, DKIM, and DMARC are analyzed to evaluate spoofing risks.
4. All 'Received' hops are parsed to show the server-to-server delivery path along with network latency delays.

Primary Use Cases

• Analyzing suspicious emails for phishing or spoofing signs.
• Tracking email delivery routing and latency bottlenecks.
• Identifying the sender's origin IP address from email headers.

Common Security Pitfalls

• Assuming the 'From' header is authentic (it is easily spoofed; the true sender should be verified via SPF/DKIM/DMARC in headers).
• Confusing client send time with mail relay arrival time, which might differ due to timezone differences.

Frequently Asked Questions

How do I find raw email headers?

In Gmail, click 'More' (three dots) next to Reply, and select 'Show original'. In Outlook, select 'File' > 'Properties' > 'Internet headers'. Copy the full text and paste it here.

What does a delay in email hops mean?

A delay indicates that a mail server took time to process and forward the email to the next hop. This could be due to spam scanning, server load, or network issues.

References & Standards

• MTR and Mail Hops RFC 5321
• MTA and Mail Authentication RFC 8601