Are there any risks in using Fetion to send commercial text messages in bulk?

It’s not that they were blacklisted by China Mobile and closed down their SMS services, but the three major operators seem to have relevant mechanisms to send more than 300 text messages in a short period of time (otherwise it would be 100, I forgot the details) I used to send a group notification when I changed my number, but later I couldn't send it again. I told the customer service staff not to send too many messages at once. They will enable the SMS function for you again, but they can't send it immediately. It will disappear after 72 seconds.) The text message function will be frozen

So when you send, don’t send too many at once. After sending a lot, don’t send immediately. There will be a certain vacancy period