Email Header Analyzer

Paste any raw email headers and instantly see SPF, DKIM and DMARC results, sending IP reputation, and a hop-by-hop delivery timeline. Works on any email you've already received.

100% Free No Sending Required Instant Results

Paste Email Headers

Secure by designYour email header is processed instantly over an encrypted connection and never stored on our servers.

Encrypted in transitSubmitted over HTTPS/TLS — nothing is sent in plain text.

Never storedThe header text you paste is not saved to any database or log.

No third-party sharingYour header data is never shared with ads, trackers, or outside services.

Processed instantlyParsed on request and discarded immediately after the response.

About Email Header Analyzer

What Is an Email Header Analyzer?

Email headers contain routing and authentication data invisible in a normal inbox view — the servers a message passed through, SPF/DKIM/DMARC results, and timing details. This tool parses raw headers into a readable report, useful for diagnosing delivery delays or investigating a suspicious message.

How to Use This Tool

Copy the full raw email headers from your email client
Paste them into the input box
Click Analyze
Review the parsed routing, timing, and authentication results

Key Features

Full routing path breakdown — see every server hop
Authentication result parsing — SPF, DKIM, DMARC pass/fail shown clearly

Who Uses This Tool

Email administrators diagnosing delivery delays or routing issues. Security teams investigating a suspicious or phishing email's true origin.

Frequently Asked Questions

How do I get the raw headers from my email client?
Most email clients have a "show original" or "view source" option in the message menu that reveals the full raw header text.

Is this tool free?
Yes, analyzing email headers is completely free.

Frequently Asked Questions

How do I get the raw headers from Gmail?

Open the email, click the three-dot menu in the top right, then "Show original." Copy everything on that page and paste it here.

How do I get them from Outlook?

Open the email, go to File > Properties (desktop) or the three-dot menu > View message source (web), and copy the header block.

What's the difference between this and the Email Tester?

Email Tester requires sending a fresh test email to a generated address. This tool works on any headers you already have — a past email, a bounce, or something suspicious someone forwarded you.

What is the delivery timeline?

Each Received header records a timestamp for when the message passed through that server. We calculate the time between each hop — an unusually long gap often points to greylisting or spam-queue processing.

Do you store the headers I paste?

No — headers are analyzed in memory for this one request and never saved.