Examine source code of TempMail - Temporary Email by ILoveTempMail

{
  "manifest_version": 2,
  "name": "ILoveTempMail - Disposable Email",
  "description": "Instant disposable email addresses. Auto-fill signup forms with one click.",
  "version": "0.0.6",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "storage",
    "alarms",
    "activeTab",
    "cookies",
    "https://api.ilovetempmail.com/*",
    "https://ilovetempmail.com/*",
    "https://www.ilovetempmail.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d656c0da-af0d-453a-bc50-cba15758cd4e}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "ILoveTempMail",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "*://*.ilovetempmail.com/*",
        "*://ilovetempmail.com/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    },
    {
      "matches": [
        "*://*.ilovetempmail.com/*",
        "*://ilovetempmail.com/*",
        "http://localhost/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/sync.js"
      ]
    }
  ]
}