All notices, requests and other communications to any party hereunder shall be in writing and either delivered personally, telecopied or sent by certified or registered mail, postage prepaid.

通知协议各方的所有通知、要求或联系均应以书面形式通过个人递送、传真递送或邮资预付的挂号信方式递送。

youdao

Netflix pioneered the concept of sending subscribers DVDs in the mail along with a prepaid envelope.

FORBES: Better Than A Movie