The short answer on when to send appointment reminders: three touches. A confirmation the moment the job is booked, a reminder the afternoon before, and a short text the morning of the appointment. That cadence covers forgetfulness without pestering the customer, and it leaves you enough time to refill the slot if someone cancels.
Here is the timing detail and the reasoning behind each touch.
Most shops either send nothing or send one reminder at a random time. Shops that keep their schedules intact tend to hit the same three marks:
That is the whole cadence. More than three touches and you start training customers to ignore you.
Each reminder solves a different problem, and the timing is what makes each one work.
The booking confirmation kills the "I never made that appointment" dispute before it starts. The customer's memory is freshest right after the call, so the details move straight from the conversation into their text history while they still match.
The day-before reminder is early enough to act on. If a customer cancels at 3 PM the day before, your office can work the waiting list and refill the slot. A cancellation at 8 AM the day of is just a hole in the schedule and a tech with nothing to do.
The morning-of text is not really about the schedule — it is about access. The customer moves the car out of the garage, unblocks the door, puts the dog in the house. Your tech starts work instead of waiting in the driveway burning clock.
Say you run a two-truck shop. Tuesday's board has six jobs: three repairs in the morning, two opener installs after lunch, and one emergency call that just came in.
Monday around 3 PM, all six customers get the day-before text: "Hi [name], [Shop] confirming your tech tomorrow between 10 and 12 at [address]. Reply YES to confirm, or call us to move it."
Five reply YES within the hour. One does not reply by 6 PM, so the office calls. Turns out the customer's opener started behaving again and they forgot to cancel. You pull a waiting estimate from Thursday into that slot instead of eating it.
Tuesday morning, each customer gets the on-the-way text about 75 minutes before their window. The emergency job slides into the gap the cancellation opened. Nobody sits idle, nobody waits in a driveway, and the day holds together.
Total time spent by your office: maybe 20 minutes, most of it just watching the confirmations come in.
Knowing when to send appointment reminders only pays off if the appointment details are captured correctly in the first place. If the name, address, or window is wrong, the best-timed reminder in the world goes to the wrong person at the wrong time.
That is the flow laid out in the parent guide on automating appointment confirmations and reminders: clean booking capture first, then the reminder cadence on top. For the exact wording, swipe the copy in our appointment confirmation text examples. And if you are weighing which channel to send them through, here is the breakdown on text vs email appointment reminders.
Ava handles step one for you. She answers every call 24/7, captures the customer's name, phone, address, and issue, books the service window into your schedule, and texts and emails you the summary instantly. The reminder cadence above runs on top of that clean booking. Get the first piece right and the rest is habit.
Call the live demo and have Ava call you now — hear exactly what your customers will hear when they call your shop.