[
  {
    "email": "popup.test@example.com",
    "created_at": "2026-08-19T03:44:38.839Z",
    "source": "welcome-popup"
  },
  {
    "email": "karoldaniela620@gmail.com",
    "created_at": "2026-08-19T03:49:44.743Z",
    "source": "welcome-popup"
  }
]