Examine source code of Idgon

{
  "name": "Idgon",
  "description": "Idgon provides advanced email privacy to protect your personal information. Idgon protects your private email address from hackers and data breaches. Unlike temporary 'burner' email systems Idgon emails allow you to both send and recieve email with anyone without sharing your private email address.",
  "version": "0.1.4",
  "author": "Jesse Schoch",
  "manifest_version": 2,
  "permissions": [
    "activeTab",
    "https://beta.idgon.com/"
  ],
  "browser_action": {
    "default_title": "Idgon Beta",
    "default_icon": "idgon_logo-128.png",
    "default_popup": "popup.html"
  },
  "popup": {
    "scripts": [
      "popup.js"
    ]
  },
  "icons": {
    "16": "idgon_logo-16.png",
    "128": "idgon_logo-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b7820b01-3de1-4c3d-b01e-7dd5b4b834d0}",
      "strict_min_version": "60.0"
    }
  }
}