Free Email Tracker for Gmail, by Canary Mail

Unlimited email open tracking notifications for your messages. Get instant read receipts to know if your emails are opened or not.
Premium users can view and search full source code, and see the source code differences between two versions.
Upgrade to premium
manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Free Email Tracker for Gmail, by Canary Mail",
  "version": "2.2",
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAgDG/avwUqAuFv2wLkjbmgSMddmTIDFVg58LUmvQYiV0nYspu3DDoUkj3ibAEra+n8hR0aTg9Uc+b94Z+MkZjPwuZrGgdEx//otyZtMOafV691Bs8T+besDc8TTL+c265JWxfu4xk0h0rHT3PVeFXJtVoEQ7oj3xWHnrIjmNoj90+Zg6PzpvA6IfQ7bVDwddZ4yPafAg/SeQDkB/bZxIhnBiku/Rj5MMXUyH3ehBYl5UZwlbRGehyReLvg1O8FylT0YCAhE3BCKgAKHaQDV63VJjRxs2GUCqeSe0UIkwznz42nJaJAMTZpE0mppQn7O1GiqsdOc4IyLif9u4QKBPhAQIDAQAB",
  "minimum_chrome_version": "93.0",
  "author": {
    "name": "Canary Mail Team",
    "email": "hello@canarymail.io"
  },
  "description": "Unlimited email open tracking notifications for your messages. Get instant read receipts to know if your emails are opened or not.",
  "icons": {
    "16": "public/canary-icon-16.png",
    "32": "public/canary-icon-32.png",
    "48": "public/canary-icon-48.png",
    "128": "public/canary-icon-128.png"
  },
  "action": {
    "default_popup": "public/popup.html",
    "default_title": "Free Email Tracker for Gmail, by Canary Mail"
  },
  "background": {
    "service_worker": "dist/background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "*://mail.google.com/*"
      ],
      "js": [
        "dist/extensionInjector.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "dist/*",
        "public/*"
      ],
      "matches": [
        "*://mail.google.com/*"
      ]
    }
  ],
  "host_permissions": [
    "*://mail.google.com/*",
    "*://*.googleusercontent.com/*"
  ],
  "permissions": [
    "storage",
    "notifications",
    "declarativeNetRequest"
  ],
  "externally_connectable": {
    "matches": [
      "*://mail.google.com/*"
    ]
  }
}