{
  "createDto": {
    "title": "我的第一封未来邮件",
    "content": "这是一封测试邮件，将在未来某个时间点发送。",
    "recipientType": 0,
    "deliveryTime": "2025-12-31T23:59:59Z",
    "triggerType": 0,
    "isEncrypted": false,
    "theme": "default"
  }
}