Send a text reminder to the contacts who have been invited to an appointment:
Reminders will be sent at the following times:
- If you create a same-day appointment, the text reminder is sent right away.
- For appointments that start before 8:30 am, the text reminder will be sent an hour before the appointment.
- For appointments that start after 8:30 am, the text reminder will be sent at 8:30 am.
For an all-day appointment, the text reminder will be sent at 12:30 pm the day before.
Times are based on the user's timezone unless an explicit appointment timezone was set.