There are many short message platforms. Netease and Tencent both have their own SMS platforms. The difference lies in the price. It is also very simple to use. If you register an account on the SMS platform, you will generally be given a key, and then you can call it with the api address given by the platform. Just follow the example given by the platform.

If you access through an operator, you need to know CMPP, SNGP, SGIP and other protocols first. It is not difficult to use Socket. If you access through a third-party SMS service provider, you only need to use the HTTP protocol, which is basically not difficult to develop, and the concurrency and efficiency will be much lower than the former.