How to send SMS to enable SMS storage?

"SMS storage" service is a comprehensive service that both the calling party and the called party can subscribe to. After subscribing to this service, the SMS sent/received by users will be automatically saved in the SMS safe deposit box of users. Users can query the SMS records of the safe deposit box through the self-service website. When the safe deposit box reaches 80% of the set capacity, it will receive an automatic notice from the system. Short message storage service provides point-to-point, point-to-point application and point-to-point message storage service.

Processing and unsubscribing methods of SMS storage service;

Personalized setting method of SMS storage service;