ExcelSMS is a service that allows client to upload large amount of numbers through Excel management and blast it out in the same time efficiently. Furthermore, ExcelSMS is able to enhance the quality of Customer Relationship Management (CRM) without any cost distributed to the system development or staffs training. User can simply upload the data into the SMS platform, for instance: contact list, Billing amount, birthdays, appointment day as well as location. The system can automatically send out the SMS regarding billing reminder, appointment reminder as well as birthday greetings according to clients requirement.