Email Privacy Protector: Is My Email Tracked?

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Email Privacy Protector: Is My Email Tracked?",
  "short_name": "Email Privacy Protector by cloudHQ",
  "description": "Anytime you open your emails, people could be tracking when you do it, and which links you click on. Protect your email privacy.",
  "version": "1.0.2.0",
  "author": "https://www.cloudhq.net",
  "content_scripts": [
    {
      "exclude_globs": [],
      "css": [
        "stylesheets/jquery.dropdown.css",
        "stylesheets/popover.css",
        "stylesheets/main_gmail_privacy_tracker.css"
      ],
      "include_globs": [],
      "matches": [
        "https://mail.google.com/*",
        "https://inbox.google.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "service_worker": "background.js"
  },
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "urls",
        "enabled": true,
        "path": "rules/urls.json"
      },
      {
        "id": "words",
        "enabled": true,
        "path": "rules/words.json"
      }
    ]
  },
  "permissions": [
    "scripting",
    "storage",
    "background",
    "declarativeNetRequest",
    "declarativeNetRequestFeedback"
  ],
  "host_permissions": [
    "https://mail.google.com/",
    "https://inbox.google.com/",
    "https://www.cloudhq.net/",
    "*://*.googleusercontent.com/*",
    "*://taskassist-pa.clients6.google.com/*"
  ],
  "manifest_version": 3,
  "web_accessible_resources": [
    {
      "resources": [
        "javascripts/*",
        "icons/*",
        "*"
      ],
      "matches": [
        "*://*.cloudhq.net/*",
        "*://*.google.com/*"
      ]
    }
  ],
  "icons": {
    "48": "icons/gmail_privacy_tracker.png",
    "128": "icons/gmail_privacy_tracker.png"
  },
  "converted_from_user_script": true,
  "externally_connectable": {
    "matches": [
      "*://*.cloudhq.net/*"
    ]
  },
  "action": {
    "default_icon": "icons/gmail_privacy_tracker.png",
    "default_title": "Email Privacy Protector by cloudHQ"
  }
}