Appointment reminder messages should be able to be timed XX hours before the appointment, not the day before, or two days earlier, or three days earlier, etc. It would be important for the customer to receive a reminder email, e.g. 26h before the appointment, in which case they would have another 2h to cancel their appointment free of charge. The last reminder, e.g. reminder text, should be able to be sent e.g. 1h or 2h before the appointment. That might greatly reduce the number of no shows. Now the latest possible reminder time for everything is the day before and unfortunately this is reflected in the number of customer forgetfulness.
