Email Tracking for Gmail

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Email Tracking for Gmail",
  "description": "Track your Google Drive and Dropbox email attachments. Be notified when your attachments are read or downloaded.",
  "version": "2.0.1",
  "permissions": [
    "scripting"
  ],
  "host_permissions": [
    "https://mail.google.com/"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "embed/index.html",
        "embed/index.js"
      ],
      "matches": [
        "https://mail.google.com/*",
        "https://inbox.google.com/*"
      ]
    }
  ],
  "homepage_url": "https://www.orangedox.com/gmail",
  "background": {
    "service_worker": "lib/background.js"
  },
  "content_scripts": [
    {
      "js": [
        "js/jquery.js",
        "js/json2html.js",
        "js/moappi.api.js",
        "js/moment.js",
        "js/simple.join.js",
        "js/socket.io.js",
        "js/webfont.js",
        "js/inboxsdk.js",
        "js/jquery.color.js",
        "config.js",
        "lib/orangedox.js",
        "lib/plugins/base.js",
        "lib/plugins/analytics/embed.js",
        "lib/plugins/chooser/embed.js",
        "lib/plugins/login/embed.js",
        "lib/load.js"
      ],
      "matches": [
        "https://mail.google.com/*",
        "https://inbox.google.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "128": "img/logo-icon-colour-128.png"
  },
  "manifest_version": 3
}