People who run bookings through CalendarPA need customers to know whether an appointment is confirmed, changed, or cancelled. A New Booking trigger can send a Mobile Message SMS with the booking time and practical instructions. Booking Approved can provide a second, more specific message when a pending appointment is accepted, while Booking Rescheduled can notify the customer of the new time.

This connection uses Zapier, with CalendarPA events starting Mobile Message actions. Booking Cancelled and Booking Denied can also send clear notices, helping prevent customers from arriving for an appointment that is no longer available. Mobile Message's Inbound SMS Received trigger can run CalendarPA's Create Booking action when a text contains the information needed to create an appointment. Each workflow is one-directional, so this is not a native two-way sync between calendars and SMS. Map the customer's phone number and booking fields carefully, use separate message wording for approvals and changes, and test the dates and times before enabling customer notifications.