Scroll down to the “Schedule” section. How the schedule setting works is that it will change the order to Send now, based on the number of days that you chose. The number of days is days from when you mark an order as complete on Etsy.
The schedule option is important, and you should edit this based on your delivery time.
For example: If your orders are normally delivered within 5 days, we suggest that you add a couple of days, e.g. chose 8 days. This is just to make sure your order has been delivered before you are sending the message.