Free Email Header Analyzer

Instantly diagnose email delivery issues, detect spoofing attempts, and verify SPF, DKIM, and DMARC authentication.

Upload an email header or send an email to analyze authentication results, routing paths, delays, and security risks in seconds.

How to Use This Email Header Analyzer

1. Upload raw header or send an email

Paste raw email headers or send the email to the auto-generated analyzer address.


2. Click “Analyze”

Our tool parses authentication, routing, and security signals instantly.


3. Review clear results

See pass, fail, and risk insights with easy-to-understand explanations.


Email Analysis Results Explained

  • Passed

    SPF and DKIM both pass and DMARC alignment is successful.

  • Partially passed

    Either SPF or DKIM passes, but DMARC alignment is incomplete.

  • Failed

    Both SPF and DKIM fail, resulting in DMARC failure.

What is an Email Header and Why Does it Matter

An email header is a hidden metadata layer that contains everything about how an email was sent, authenticated, and delivered. It reveals:

Ensure-Compliance

Sender and receiver details

Server hops and routing paths

Authentication results (SPF, DKIM, DMARC, BIMI, MTA-STS, TLS-RPT)

Detailed error highlights

A powerful email header analyzer helps you quickly diagnose delivery failures, spot spoofing, trace suspicious activity, and understand why an email was flagged as spam.

Why Use an Email Header Analyzer?

  • Verify SPF, DKIM, and DMARC authentication

  • Identify configuration errors or misalignment

  • Detect spoofing, phishing attempts, or suspicious IP addresses

  • Analyze server hops and pinpoint delivery delays

  • Check ARC validation in forwarded emails

  • Understand spam and security risks

Email-Header-and-Domain-Reputation-Analysis

Key Features of Our Email Header Analyzer Tool

Advanced Email Header Authentication Checks

Check SPF, DKIM, and DMARC authentication with clear explanations and instantly spot weak or missing email security controls.

Delivery & Delay Analysis

Visualize every server hop in a clear timeline to identify routing issues, delays, or misconfigured mail servers.

Security Risk Detection

Highlight high-risk elements such as suspicious IP addresses, compromised hosts, missing records, and spoofing indicators.

ARC & Forwarding Validation

Verify ARC-Seal and ARC-Authentication-Results to detect broken forwarding chains, essential for mailing lists and relays.

Readable Header Formatting

Transform raw, unstructured email headers into a clean, structured, human-readable format.

MTA-STS & BIMI Compliance Verification

Analyze the implementation of advanced protocols beyond basic DMARC to ensure your domain is configured for modern TLS encryption (MTA-STS) and visual brand identification (BIMI) in the inbox.

How to Find Your Email Header (By Email Client)

Gmail

  1. Open the email you want to analyze.
  2. Click the three vertical dots next to the reply button.
  3. Select Show original.
  4. Click Copy to clipboard to copy the full header.

Outlook

  1. Double-click the email to open it in a new window.
  2. Click File → Properties.
  3. Copy the text from the Internet headers section.

Apple Mail

  1. Open the email.
  2. Click View → Message → All Headers or Raw Source.
  3. Copy the header text.

Yahoo Mail

  1. Open the email.
  2. Click More (three dots) → View raw message.
  3. Copy the header portion or the entire raw message.

Thunderbird

  1. Open the email.
  2. Click View → Headers → All.
  3. For raw source, press Ctrl + U (Windows/Linux) or Cmd + U (Mac).

Tip: You only need the header. The email body is not required.

Email Header Analyzer FAQs

It parses and analyzes email header data to determine authentication results, routing paths, delivery delays, and potential security risks.

Headers often reveal authentication failures, risky sending IPs, or spam-triggering signals used by mailbox providers.

 

The tool uses industry-standard authentication checks to provide highly reliable and actionable insights.

Yes. Authentication failures, domain mismatches, and suspicious sending infrastructure are strong spoofing indicators.

Yes. PowerDMARC’s Email Header Analyzer is completely free and requires no login.

No. Header data is not stored or shared.

Go Beyond Email Header Analysis

Email headers show the symptoms.

DMARC monitoring fixes the cause.

Protect your domain with real-time DMARC monitoring, advanced analytics, and fully managed email authentication.