BCBC EMAIL HEADER ANALYZER v0.1.0
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Created by Mikey_LikesIT + ChatGPT

WHAT IT DOES
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This portable tool reads raw email headers or an .eml email file and explains:

* SPF, DKIM, and DMARC results
* From, Reply-To, and Return-Path differences
* Message-ID and domain clues
* The mail-server delivery route
* Which findings are verified, clues, or unknown

PRIVACY
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The analyzer runs entirely inside your web browser. It does not upload, send,
or save the email. It does not require an Internet connection.

WINDOWS INSTRUCTIONS
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1. Right-click the ZIP file and choose "Extract All."
2. Open the extracted folder.
3. Double-click OPEN-BCBC-EMAIL-ANALYZER.cmd.

You may also double-click BCBC-Email-Header-Analyzer.html directly.

HOW TO GET A GMAIL MESSAGE
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1. Open the message in Gmail on a computer.
2. Click the three-dot More menu near the Reply button.
3. Choose "Show original."
4. Download the original message, or copy its complete raw source.
5. Drop the downloaded .eml file onto the analyzer or paste the source.

IMPORTANT LIMIT
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A passing authentication result can support that an email came through the
shown account or domain. It does not prove the legal identity of the person at
the keyboard. Accounts may be shared, compromised, or operated under aliases.

SYSTEM REQUIREMENTS
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Windows 10 or 11 with a current version of Edge, Chrome, or Firefox.
The same HTML file also works on Linux and macOS.

No installation, administrator rights, account, or mail server is required.

