GeniusMail: Powerful mail merge for Gmail

manifest.json

{
  "manifest_version": 2,
  "name": "GeniusMail: Powerful mail merge for Gmail",
  "short_name": "GeniusMail",
  "update_url": "https://clients2.google.com/service/update2/crx",
  "version": "1.0",
  "icons": {
    "128": "./assets/images/GM.png"
  },
  "content_scripts": [
    {
      "js": [
        "./inboxsdk.js",
        "./js/vendor.js",
        "./js/content.js",
        "./jquery.bpopup.min.js",
        "./select2.full.js",
        "./selectize.js"
      ],
      "css": [
        "./assets/css/GeniusMail.css",
        "./assets/css/custom.css",
        "./assets/css/select2.css",
        "./assets/css/selectize.css"
      ],
      "matches": [
        "http://mail.google.com/*",
        "https://mail.google.com/*",
        "https://inbox.google.com/*",
        "http://inbox.google.com/*",
        "https://accounts.google.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "./js/background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "Genius Mail"
  },
  "description": "A powerful mass email and mail merge system for Gmail.",
  "permissions": [
    "identity",
    "https://www.googleapis.com/oauth2/v4/token ",
    "tabs",
    "activeTab",
    "storage",
    "notifications",
    "*://*.google.com/*",
    "https://accounts.google.com/",
    "https://*.gmail.com/",
    "https://*.app.geniusmail.io/"
  ],
  "content_security_policy": "script-src 'self' https://app.geniusmail.io ; object-src 'self' https://app.geniusmail.io "
}