SMS verification code, do you generally use the api of the third-party platform for mass SMS?

Sending text messages needs to be bound to three channels, namely Unicom, mobile and telecom. After logging in, all three channels will get a usage agreement. The role of the third-party platform is to integrate these three protocols into one interface. You only need to dock this interface on your own platform to realize triple play. If you don't need a third-party platform, you need to make a platform to integrate the three protocols. For the general verification code, the sending volume is not large, which is obviously not cost-effective. There is expertise in the industry, and you don't have to develop it yourself if necessary. There are also many good third-party platforms. Haoyu Information and Dada are recognized as good platforms, and everyone has different interests. On the contrary, using a third party can save time, energy and money compared with developing it yourself.