There are three possible scheduling options on EchoBack. These options are Send Now, Send at a Date and Time, and Send Weekly Recurring. Not all SMS apps support all three scheduling methods. Send Now works exactly as expected. Once saved the message is sent ASAP to all of your chosen groups/contacts. Delivery times will vary depending on how many contacts the text message is being sent to. Send at a Date and Time allows you to schedule the text message to be sent at a later date and time. You may select any date but you may only select a time from 8AM to 9PM in order to remain in compliance with FCC regulations. Send Weekly Recurring schedules the text message to be sent every week on the week day you choose and at the time you choose.