Postal Remittances and Savings Act Article 11

Unless by court order, or by written notice from the prosecutor’s office or as stipulated by law, Chunghwa Post may not entertain a request from a third party to stop a transaction of any account or make a payment for remittance.Unless stipulated by other laws or by the regulations of the FSC, Chunghwa Post and its employees shall keep confidential all information concerning the postal savings and remittances of its customers.
中文原文 郵政儲金匯兌法第11條
中華郵政公司非依法院之裁判或檢察機關之書面通知或其他法律之規定,不得接受第三人有關停止帳戶交易活動或給付匯款之請求。
中華郵政公司及其服務人員對於顧客之郵政儲金或匯款等有關資料,除其他法律或金融監督管理委員會另有規定外,應保守秘密。

English translation for reference only; the Chinese text prevails. Not legal advice.