Email Header Analyzer

Detailed Email Header Analysis

The Email Header Analyzer provides a comprehensive breakdown of your email's journey by analyzing raw header data. By pasting the headers into the tool, you can visualize every routing hop and identify specific delays at each stage of transmission. Additionally, it automatically checks critical authentication protocols like SPF, DKIM, and DMARC. This helps you understand exactly how an email moved through different mail servers and whether it passed necessary security checks to reach its final destination safely.

Troubleshooting and Security Verification

Use this tool to diagnose delivery issues, such as why an email was delayed or blocked by a recipient's server. It is an essential utility for IT professionals and developers who need to verify that their outgoing mail is properly authenticated. By identifying failed SPF or DKIM records, you can improve your sender reputation and ensure that your communications are not flagged as spam or phishing attempts by receiving mail servers.

Secure Local Processing

Your privacy is a priority when analyzing sensitive communication data. The Email Header Analyzer processes the raw header information directly in your web browser. This means that the data you paste is not sent to an external server for analysis, ensuring that private email metadata remains local. You can confidently inspect delivery paths and authentication results without worrying about your personal information being stored or shared with third parties during the analysis process.

What is an email header?

An email header contains metadata about a message, including the sender's IP address, the mail servers it passed through, and authentication results. It provides a complete history of the delivery path, allowing you to see exactly where delays occurred or if security protocols like SPF and DKIM were successfully validated during transit.

How do I check SPF, DKIM, and DMARC?

You can check these authentication results by pasting the raw email header into our analyzer. The tool automatically parses the Authentication-Results field and other relevant headers to provide a clear visual summary of whether your emails are correctly authenticated, helping you prevent your messages from being marked as spam.

Why is my email taking so long to arrive?

Delays can occur at various hops in the mail server network. By using the Email Header Analyzer, you can pinpoint exactly which hop caused the delay. This helps identify whether the issue lies with your outgoing server, a relay provider, or the recipient's receiving infrastructure, allowing for faster troubleshooting.

Is it safe to paste my email headers?

Yes, because the tool processes information directly in your browser. Your raw header data is not uploaded to a remote server or stored in a database. This ensures that sensitive metadata regarding your email's delivery path and authentication status remains private while you analyze the technical details of your messages.