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Enhance Gmail's 'Show Original' view with intelligent header parsing and formatting. Compatible with Chrome, Edge, and Firefox. Welcome to Gmail Headers Beautifier, the most advanced email header analysis tool available. Email headers contain crucial information about an email's journey from sender to recipient. Understanding these headers is essential for email deliverability professionals. This extension transforms complex, technical email headers into beautiful, organized, and actionable information. 📝 Quick Start Guide 1. Open Gmail in your Chrome browser 2. Click on any email to open it 3. Click the three dots menu (⋮) in the email toolbar 4. Select "Show original" from the dropdown 5. Watch as your headers are automatically beautified! ✨ 🎯 Why Use This Extension? - Instant Analysis: Automatically parses and categorizes complex headers - Professional Visualization: Clean, modern interface with Top Deliverability branding - Deliverability Insights: Understand authentication, routing, and delivery paths - Time-Saving: No more manually parsing raw email data - Expert-Designed: Built by email deliverability professionals 📧 Gmail Integration The Gmail integration provides seamless header analysis directly within your email workflow. Here's everything you need to know: 🔍 Automatic Detection The extension automatically detects when you're viewing a "Show Original" page and instantly beautifies the headers. No additional clicks or configuration required. 🎛️ Interactive Controls 📧 Beautified View Switch to organized, color-coded headers with intelligent categorization and formatting. 📝 Raw Headers Toggle back to original Gmail view when you need to see the unmodified header data. ⚙️ Settings Panel Access quick settings directly in Gmail without opening new tabs or windows. ⚠️ Important Note The extension only works on Gmail's "Show Original" pages. Make sure to select "Show original" from the email menu to activate the beautification. 🔧 Standalone Tool The standalone beautifier allows you to analyze headers from any email system, not just Gmail. Perfect for: - Analyzing headers from Outlook, Thunderbird, or other email clients - Processing .eml files from email archives - Batch analysis of multiple email headers - Training and educational purposes 📝 How to Access 🎯 Three Ways to Open 1. From Popup: Click the extension icon → "🔧 Beautify Raw Headers" 2. From This Help Page: Click "🔧 Beautify Raw Headers" in the header 3. Direct URL: Use the extension's standalone.html page 📂 Input Methods 📋 Paste Headers Copy and paste raw email headers directly into the large text area. Supports multi-line headers with proper parsing. 📁 File Upload Upload .txt, .eml, or .msg files. Supports drag & drop for quick processing. 📝 Sample Data Load example headers to test features and learn how the tool works. ✨ All Features Gmail Headers Beautifier is packed with professional-grade features designed for email deliverability experts: 🎨 Intelligent Categorization 📬 Message Information From, To, Subject, Date, Message-ID, and core message metadata beautifully organized. 🛣️ Delivery Path Complete routing information showing how the email traveled through servers (Received headers). 🔐 Authentication DKIM, SPF, DMARC, and ARC validation results with clear formatting and analysis. 📍 Routing Information Return-path, delivered-to, forwarding details, and infrastructure routing data. 🔧 Technical Headers All other technical headers organized cleanly for comprehensive analysis. 🔍 Advanced Search Powerful search functionality with real-time filtering: - Live Search: Filter headers as you type - Smart Suggestions: Pre-filled search terms for common queries - Visual Highlighting: Search terms highlighted in results - Result Counter: See exactly how many headers match - Keyboard Shortcuts: Ctrl+F to focus search, Escape to clear 📋 Copy & Export Functions 📄 Individual Headers Copy specific headers to clipboard with one click. Perfect for sharing specific information. 📋 Section Copy Copy entire sections (all authentication headers, all received headers, etc.) with formatted output. 📊 Full Export Export all beautified headers with timestamps and organized sections for reports. ⚙️ Customization Options Tailor the extension to your preferences: - Themes: Top Deliverability (default), Dark Mode, Light Mode, Custom - Font Sizes: Small, Medium, Large, Extra Large - Section Visibility: Show/hide specific header categories - Color Customization: Custom color schemes for different header types - Animation Controls: Enable/disable smooth transitions