Examine source code of Email Tracker

{
  "manifest_version": 3,
  "default_locale": "en",
  "name": "__MSG_extName__",
  "version": "1.5",
  "description": "__MSG_extDescription__",
  "short_name": "__MSG_extName__",
  "permissions": [
    "storage",
    "notifications",
    "alarms",
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "https://mail.google.com/*",
    "https://softnour.com/*",
    "https://*.googleusercontent.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "emailtracker@softnour.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personallyIdentifyingInfo",
          "websiteActivity"
        ]
      }
    }
  },
  "action": {
    "default_title": "__MSG_actionTitle__",
    "default_popup": "popup.html"
  },
  "options_page": "options.html",
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "content.js",
        "shield-revive.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://softnour.com/Product/MailTracker/dashboard/*"
      ],
      "js": [
        "dashboard-bridge.js"
      ],
      "run_at": "document_start"
    }
  ]
}