Shipping Tool is a system for preparing to send items by post. To facilitate It is convenient for users to prepare for the delivery in advance (Preload), which will enable users to use the service more convenient, faster, reduce procedures and reduce the waiting time for the delivery queue at the post office. By developing to be a single platform, supporting services both in the country and between countries. All user groups It is also a means of electronic advance delivery of customs information or ITMATT information in exchange for overseas postage and customs through the International Postal Union (UPU) CDS system.