Examine source code of TrustGuard - Email Scam Detector

{
  "manifest_version": 3,
  "name": "TrustGuard - Email Scam Detector",
  "version": "2.3.6",
  "description": "Automatically scans Gmail, Yahoo Mail, Outlook, AT&T/BellSouth, and other webmail for phishing and scam patterns.",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://mail.google.com/*",
    "https://mail.yahoo.com/*",
    "https://mail.yahoo.co.uk/*",
    "https://mail.yahoo.ca/*",
    "https://mail.yahoo.com.au/*",
    "https://overview.mail.yahoo.com/*",
    "https://currently.att.yahoo.com/*",
    "https://outlook.live.com/*",
    "https://outlook.office.com/*",
    "https://outlook.office365.com/*",
    "https://outlook.com/*"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_title": "TrustGuard",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*",
        "https://mail.yahoo.com/*",
        "https://mail.yahoo.co.uk/*",
        "https://mail.yahoo.ca/*",
        "https://mail.yahoo.com.au/*",
        "https://overview.mail.yahoo.com/*",
        "https://currently.att.yahoo.com/*",
        "https://outlook.live.com/*",
        "https://outlook.office.com/*",
        "https://outlook.office365.com/*",
        "https://outlook.com/*"
      ],
      "js": [
        "dist/content.js"
      ],
      "css": [
        "styles/gmail-panel.css"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "incognito": "spanning",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "trustguard@trustguard.app",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}