The program is designed for scheduling SMS sending at expected time. The application silently assists you and won't bother when you have limited time. On message creation you set date and time when the system has to send it. The scheduler can be useful either you're going to deliver birthday greetings in several days or you intend to remind some of your colleagues to do important things tomorrow morning.
In case of issues, please, don't hesitate to contact support. We appreciate your satisfaction.