Which is not the basic function of the post office?

As an e-commerce platform for small businesses, the basic functions of Dianxiaodian include commodity management, order processing and membership management. , designed to meet the basic needs of daily operations of enterprises. Promotion management involves complex activities such as making promotion plans, designing coupons and activity pages, and tracking promotion effects, which requires certain professional knowledge and resources. Promotion management is a relatively advanced function, and it is not the basic function of the postal service to provide it to businesses in need.