發送短信 : Boundary spanning by design: Insights from a vendor perspective

  _____     ______     _____    _____     _  __  
 |__  //   /_   _//   / ___//  |  ___||  | |/ // 
   / //     -| ||-    \___ \\  | ||__    | ' //  
  / //__    _| ||_    /    //  | ||__    | . \\  
 /_____||  /_____//  /____//   |_____||  |_|\_\\ 
 `-----`   `-----`  `-----`    `-----`   `-` --`