Examine source code of Temp Mail .FYI

{
  "manifest_version": 3,
  "name": "Temp Mail .FYI",
  "version": "1.0.1",
  "description": "Generate free temporary emails instantly. Protect privacy with secure disposable email service. No registration required.",
  "author": "Temp Mail .FYI",
  "homepage_url": "https://temp-mail.fyi/",
  "browser_specific_settings": {
    "gecko": {
      "id": "@temp-mail-fyi",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "collection": "user_behavior",
        "purpose": "feature",
        "required": [
          "personalCommunications"
        ]
      }
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "host_permissions": [
    "https://temp-mail.fyi/*"
  ],
  "permissions": [
    "storage"
  ],
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  }
}