How does Tencent send messages in groups?

when you open the qq page, you will see a value-added service. When you click on it, you will see the words "mass messaging", and when you click on it, you will see "Create mass messaging". You can select the mass mailing object you need on the right, click "Select customer", and then write the content you want to mass-send. You can add expressions and pictures to it. You can also set whether the customer's automatic reply function is allowed below, and you can also set the sending time at the bottom.