Network Tools
Analyze raw email headers and extract key delivery and authentication fields.
Use this Email Header Analyzer to inspect raw email headers and extract important fields such as From, To, Subject, Date, Message-ID, Received, Return-Path, SPF, DKIM, and DMARC-related results. It is useful for troubleshooting delivery issues, understanding mail flow, and basic email analysis.
Use this Email Header Analyzer to inspect raw email headers and extract important fields such as From, To, Subject, Date, Message-ID, Received, Return-Path, SPF, DKIM, and DMARC-related results. It is useful for troubleshooting delivery issues, understanding mail flow, and basic email analysis.
Use email header analyzer when you need a fast browser-based result without extra setup. It works well for quick checks, one-off tasks, and routine formatting or calculation work.
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See common questions and answers about input, output, and tool usage.
Review practical input and output examples before running the tool.
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Input
From: sender@example.com To: user@example.net Subject: Test message Date: Tue, 1 Jan 2026 10:00:00 +0000 Message-ID: <abc123@example.com>
Output
From: sender@example.com To: user@example.net Subject: Test message Date: Tue, 1 Jan 2026 10:00:00 +0000 Message-ID: <abc123@example.com>
Extracts common top-level email header fields.
Input
Received: from mail.example.com ... Authentication-Results: spf=pass dkim=pass dmarc=pass ...
Output
Received Count: 1 SPF: pass DKIM: pass DMARC: pass
Useful for quick authentication result checks.
Fix: Paste the raw header block for the clearest output.
Fix: Copy the full original raw headers from the email client.
Fix: This tool parses header content only and does not perform external reputation lookups.
It analyzes pasted raw email headers and extracts key delivery and authentication fields.
No. It parses only the header content you paste into the tool.
Yes. It counts and lists Received lines found in the header block.
Yes. It can extract those results when they appear in the headers.
It helps understand how an email was delivered and whether authentication checks passed.