Which platform is more reliable for SMS verification code?

The characteristic of verification code class is that it needs to send fewer verification codes. In fact, in general, it is no problem to send verification code on the channel of 106. The problem is that there are few verification codes, and one channel can't support them. So it is inevitable to share with others, which depends on whether the service provider has a good solution. The verification code of our website is used for Haoyu information, and it has been tossed for several times. Generally speaking, this one is good at sending verification codes.