Tracker Blocker: Stop trackers in emails

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Tracker Blocker: Stop trackers in emails",
  "version": "1.0.7",
  "description": "Stops open-tracking from working in emails.",
  "icons": {
    "128": "TrackerBlocker-128.png"
  },
  "short_name": "Tracker Blocker",
  "manifest_version": 3,
  "background": {
    "service_worker": "worker.js"
  },
  "action": {
    "default_title": "Click to enable/disable blocking",
    "default_popup": "menu.html"
  },
  "permissions": [
    "declarativeNetRequest",
    "storage",
    "declarativeNetRequestFeedback",
    "notifications"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  }
}