Appointment reminder timing: what works for different kinds of appointment

Two reminders work for most appointments: one the day before, in the afternoon, and one two to three hours before. Longer or more expensive appointments earn an earlier third reminder, a few days out, when the customer can still reschedule without a penalty. Every reminder must offer a one-reply way to move the appointment, because a reminder that can only be acknowledged turns a would-be reschedule into a no-show.

Why timing matters more than wording

A reminder sent a week out is forgotten. One sent twenty minutes before is too late to do anything about. The useful windows are the ones where the customer can still act: far enough out to reschedule without losing the slot for you, and close enough that the appointment is on their mind when they leave the house.

The default: two reminders

Day before, afternoon. Late enough that tomorrow feels real; early enough that if they need to move it, you can fill the slot. Include the time, the place, who with, and "Reply CHANGE to reschedule."

Two to three hours before. The one that gets them out the door. Time, address, parking if it matters. Same reschedule option, because things happen on the day.

When to add a third

Appointments with a cancellation policy that kicks in at 24 or 48 hours should get a reminder just before that window closes, so the customer can cancel without a fee and you can refill the slot. "Your colour appointment is Thursday at 2:30. Free rescheduling until Wednesday 2:30." Long procedures, consultations that block a provider, and anything with preparation instructions also earn the earlier reminder, with the prep attached.

What each reminder should contain

The time and date, written in full. The location, with address for multi-location businesses. The person, if the customer chose them. What to bring or do (forms, prep, arrive early). One clear way to change it. That is all. Reminders that include promotions get muted.

The reply matters more than the reminder

"Reply CHANGE" only works if a reply is handled instantly. A customer who replies CHANGE at 6pm and hears nothing until the next morning has, in effect, no-showed. The reply should get real alternative slots immediately, from the same live calendar the original booking used, and the confirmation should update everywhere.

Consent and hours

Reminders are transactional messages about an appointment the customer booked, and most customers expect them. Still, ask at booking ("Can we text you reminders at this number?") and record it. Send inside normal hours: a 6am reminder for a 9am appointment is a bad start to the day.

Adjust by appointment type

Dental cleanings: two reminders. A three-hour colour service with a deposit: three, with the policy window. A plumber's estimate visit: one the day before with "will someone be home?" and one when the technician is on the way. A consultation at a med spa: three, with prep instructions on the first. Set the schedule per service, not one for everything.

Frequently asked questions

Should reminders ask for a confirmation reply?

Optional. "Reply YES to confirm" gives you a signal, and a non-reply is a nudge to call. It works best for high-value appointments; for routine ones it adds noise.

What if the customer replies with a question instead?

Answer it. A reminder reply is a conversation, and an AI receptionist handles "is parking free?" as easily as "CHANGE".

Should reminders go by text or email?

Text for the reminders themselves; email for the original confirmation with the details to keep. Text gets read; email gets filed.

What Frontiva does here

Frontiva's bookings send two SMS reminders, 24 hours and 2 hours before, armed when the appointment is created, sent only to customers who ticked the consent box, held out of quiet hours, and never sent twice. The schedule is the same for every service today. For the wider no-show problem, read reducing no-shows with appointment reminders.