When to send appointment reminders

For most appointment businesses a good plan is: a confirmation right after booking, a main reminder about one day before, and a short reminder a few hours before if you need it. The right timing depends on how far ahead customers book and how much notice you need to fill a gap. This guide helps you set your own schedule.

The basic schedule

You do not need all four for every appointment. A haircut booked yesterday for tomorrow needs a confirmation and maybe a short note on the day. A two-hour consultation booked six weeks ago deserves all of them.

There is no single correct timing that has been proven for every business. Treat this as a starting point and adjust it with your own numbers.

Work backwards from the time you need

The most useful question is: how much notice do I need to give the slot to someone else?

• If you can fill a gap within a few hours from a waiting list, a reminder the day before is early enough.
• If you need two days to fill a slot, or you order materials or book a room, your main reminder must go out earlier, for example three days before.
• If you have a cancellation deadline, the reminder must arrive clearly before it. A reminder that comes one hour before a 24-hour deadline feels like a trap.

A simple example: your policy asks for 24 hours' notice and the appointment is on Thursday at 3 pm. Send the main reminder on Tuesday afternoon or Wednesday morning. Then the customer still has time to change it for free.

Adapt the timing to your type of business

• Hair and beauty. Confirmation at booking, main reminder one day before. Add an early reminder for long colour or bridal appointments.
• Dental and medical practices. Check-ups are often booked months ahead. Send an early reminder one or two weeks before, then the main reminder. Do not name the treatment in the message.
• Trades and home visits. The customer has to be at home. Remind the day before and send a message on the day with your arrival window.
• Consultants, lawyers, tax advisers. Remind two or three days before and list the documents to bring. The customer needs time to find them.
• Restaurants. For normal tables a reminder on the day is common. For large groups, ask for confirmation one or two days before.
• Classes and courses. A reminder the evening before, so people pack their things.

Time of day and day of the week

The hour matters as much as the day.

• Send during normal waking hours. Late morning to early evening is a safe window for most people.
• Do not send at night. A text at 6 am for a 2 pm appointment wakes people up and creates a bad mood.
• For Monday appointments, send the main reminder on Friday or Saturday morning, not on Sunday evening when your office is closed and nobody can answer a reply.
• For early morning appointments, the short reminder belongs to the evening before.
• Be careful around public holidays. Send earlier, so that a reply reaches you on a working day.

A simple rule: send the reminder at a time when the customer can still act and you can still react.

What to do when nobody replies

If your main reminder asks for a confirmation, decide in advance what silence means. A plan that many small businesses can use:

1. Main reminder one day before, with the request to reply YES or MOVE.
2. No reply after some hours: one more short message.
3. Still no reply and the appointment is long or expensive: a phone call.
4. Keep the appointment unless your policy clearly says otherwise and the customer accepted it. Cancelling on someone who then arrives is worse than a no-show.

Hi [first name], we have not heard from you about tomorrow at [time]. Are you still coming? A short YES or NO helps us plan. [business name]

More wording is in our appointment reminder templates.

How many reminders are too many?

More is not always better. Each extra message helps a little less and annoys a little more. Signs that you send too many:

• Customers reply with stop or complain at the desk.
• Regulars who never miss an appointment get the same three messages as new customers.
• You send the same content on two channels at the same time.

Two to three messages per appointment, including the confirmation, are enough for most cases. Let regular customers choose fewer. Ask at booking how people want to be reminded, and get the permission you need for texts or messaging apps. The rules differ by country. This is general information, not legal advice.

Then count. Note the number of no-shows for a month, change one timing and compare. If you would like the schedule to run by itself, with confirm and reschedule replies, the No-Show Stopper from Astranode does this. It is in early access.