How to send express messages in Pinduoduo?

It's from the merchant. Pinduoduo's delivery SMS is sent by the merchants themselves, not by the platform. After the order is delivered, the merchants in Pinduoduo can send a message to inform the buyer of the delivery of the order through the merchant backstage or the third-party SMS interface in Pinduoduo. Pinduoduo platform has supervised the short message behavior of merchants, and the short messages sent by merchants must comply with relevant regulations, and advertisements or fraudulent information cannot be sent in violation of regulations. At the same time, Pinduoduo Platform will also conduct spot check and monitoring on the short messages sent by merchants to ensure that the short message behaviors of merchants conform to the norms and protect the legitimate rights and interests of consumers.