Before the expiration of Alibaba Cloud products, there are many notification methods, such as in station mail, email, SMS, and phone calls. The original intention is good. I'm afraid that the user does not know that the renewal will affect the normal operation of the business, but sometimes the notification is too frequent, which is a bit annoying. For example, I was in a meeting when the phone rang and I found that it was a promotional advertisement from Alibaba Cloud
