Email Header Analyzer

Decode email headers to verify authentication (SPF, DKIM, DMARC), trace delivery paths, identify spam indicators, and troubleshoot deliverability issues—all in seconds.

📨 Paste Your Email Header

📖 How to Get Email Headers

Gmail: Open email → Click 3 dots (⋮) → "Show original" → Copy all text

Outlook: Open email → File → Properties → Copy "Internet headers"

Apple Mail: Open email → View → Message → Raw Source → Copy all

Yahoo: Open email → More (⋯) → "View raw message" → Copy all

🛡️ Authentication Results

📬 Sender Information

🌐 IP & Routing

⚠️ Security Analysis

📊 Email Journey (Received Headers)

💡 Why Analyze Email Headers?

🔒 Verify Authentication

Check if SPF, DKIM, and DMARC pass to ensure sender legitimacy and prevent spoofing.

🚫 Detect Spam

Identify spam scores and flags that could affect email deliverability.

🗺️ Trace Email Path

See every server your email passed through and identify delivery delays.

🔍 Troubleshoot Issues

Find misconfigurations, bounces, or suspicious patterns affecting inbox placement.

🎯 What to Look For

✅ Good Signs:

SPF, DKIM, DMARC all show "pass"
Return-Path matches From domain
No spam score or low spam score
Clean routing through reputable servers

🚨 Red Flags:

Failed authentication (SPF/DKIM/DMARC fail)
Mismatched sender domains
High spam score or spam flags
Suspicious IP addresses or routing
Missing authentication headers