Examine source code of Fox Temp Email

{
  "manifest_version": 2,
  "name": "Fox Temp Email",
  "description": "Temporary disposable email address. Protect your email from spam, bots, and phishing with Fox Temp Email.",
  "version": "1.0",
  "permissions": [
    "storage",
    "notifications",
    "activeTab",
    "https://*.foxtemp.email/*",
    "http://*.foxtemp.email/*"
  ],
  "browser_action": {
    "default_popup": "foxpopup.html",
    "default_icon": {
      "16": "img/16x16.png",
      "48": "img/48x48.png",
      "128": "img/128x128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "icons": {
    "16": "img/16x16.png",
    "48": "img/48x48.png",
    "128": "img/128x128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f7f3b121-dbbe-4fb2-b1c2-ad667b31eff0}"
    }
  }
}