How to delete group SMS recipients

Generally, each operating platform has a blacklist management representative, which means that you can add a number to the blacklist and drop it from the blacklist. If you don't want to send it to a certain number, you can directly add it to the blacklist. Also, when you send a marketing message to unsubscribe, and then someone replies to T, you can directly add his number to the blacklist, because others don't want to know more about the SMS industry and SMS platform from the blog of onesmser SMS operator.