Can SMS companies send messages in groups? Is there such a thing in Shijiazhuang?

The main business of short message companies is to send short messages in groups. It's stricter now than before. Not everything can be sent, and illegal ones will definitely not be sent. Sensitive depends on the situation. Evaluating the quality of a software depends on delivery quality, platform function and transparency, after-sales service and price. There are many good ones, such as Haoyu Information Communication, 238, Dada and so on. Of course, there are many bad ones. It is important to look at the reputation of netizens according to their own needs, not just for cheap, but for comprehensive comparison.