Get your audit

Guide Operations

How to reduce no-shows with appointment reminders.

Automatic reminders reduce no-shows by making the appointment hard to forget and easy to move: send one the day before and one shortly before, ask for a reply, and give people a way to reschedule. The research behind text reminders is real but comes mostly from healthcare, so measure your own rate.

Marcus Barber, Digital Solomon ยท Updated

What the research says

Text reminders improve attendance compared with no reminder, on moderate quality evidence from healthcare rather than home services. A 2013 Cochrane review of randomised controlled trials found moderate quality evidence that mobile text message reminders improved the rate of attendance at healthcare appointments compared to no reminders[1].

The review included eight randomised controlled trials involving 6,615 participants[1]. It also found moderate quality evidence that text reminders had a similar impact to phone call reminders[1].

Two things follow for a service business. First, a reminder is worth sending; in the review a text did about as well as a phone call, and two of its studies reported text reminders cost 55% and 65% less per attendance than phone call reminders[1]. Second, the size of the effect for a roofing estimate or a cleaning visit is not something that review measured. Your own no-show rate, before and after, is the number that counts.

When to send reminders, and how

Send a confirmation when the appointment is booked, a reminder the day before, and a short one a couple of hours before. That pattern gives people time to reschedule and a nudge on the day, without becoming noise.

  • At booking. Ask permission to text while the booking is being made, before any text goes out, then confirm the date, time, address and who is coming.
  • The day before. Ask for a reply to confirm, or offer a reschedule link. There is still time to refill the slot if the answer is no.
  • On the day. A short note, for example that the technician is on the way. No request; just information.

Text suits most short reminders. Use email as well for bookings made far ahead or for details that need more room, such as preparation instructions.

What a reminder should say

A reminder should say who it is from, what the appointment is, when and where, and what to do if the time no longer works. Everything else is optional.

An illustration, not a message from any real business: "[Business name]: your furnace tune-up is tomorrow, Tue 9 to 11am, at 14 Oak St. Reply C to confirm or R to reschedule. Reply STOP to opt out."

  • Put the business name first; a reminder from an unknown number gets ignored.
  • Give an arrival window if your crew works in windows, and say it is a window.
  • Make the reply options single letters or words that are hard to mistype.
  • Keep a STOP line on recurring reminders.

Handle confirm and reschedule replies

Every reply to a reminder needs an owner and a next step, or the reminder creates work nobody does. Decide in advance what happens to each kind of reply.

  1. A confirm reply marks the appointment confirmed. Nothing else happens.
  2. A reschedule reply sends a booking link, or alerts a person to call within the hour.
  3. Any other reply goes to a person, the same day.
  4. No reply by the evening before: a person calls the customers whose visits are long or hard to refill.

In GoHighLevel, calendar notifications can send emails, SMS and WhatsApp messages when appointments are booked, canceled, rescheduled, or need reminders or follow-ups[2]. Its reminder messages are sent before the appointment based on the timing you configure[2]. The reply handling above is a workflow decision you make on top of that.

Get permission to text at booking, and keep a record of it. The wireless industry's guidance says the consumer should give express permission before a business sends them a text message, and that permission can be given over text, on a form, on a website, or verbally[3].

Reminders are informational, which helps: industry guidance places appointment reminders in that category[3]. They still need a way to stop. The FCC's rule treats replies such as "stop" or "cancel" to a text as a reasonable way to revoke consent[4]. Under the same rule, "cancel" counts as a request to stop texts, so treat it as one; because the customer may also mean "cancel my appointment", have a person call or email them about the visit rather than letting the system guess.

If you text from a local business number, registration comes first; see A2P 10DLC registration. Rules vary by state and situation, and this guide is not legal advice. Your own counsel has the final word.

What reminders cannot fix

Reminders fix forgetting; they do not fix a booking the customer never really wanted, a window too wide to plan around, or a price that surprised them. If no-shows stay high after reminders, look upstream.

  • Bookings made by someone other than the person who will be home.
  • Arrival windows of half a day with no update on the day.
  • A quote or deposit question left unanswered before the visit.
  • Appointments booked weeks out with no touch in between.

Track the no-show rate weekly for a month before you change anything, then again after. That before and after is the only proof that matters. Reminders like these are the kind of back-office routine our Operations pillar automates.

Common questions

How many reminders should I send?

Start with a confirmation at booking, one the day before and one on the day. More than that tends to read as noise. Adjust after you have measured your no-show rate.

Are text reminders better than phone calls?

A Cochrane review of healthcare trials found text reminders had a similar effect on attendance to phone call reminders, and two of its studies reported text reminders cost less per attendance.

Do I need permission to send appointment reminders by text?

Ask for permission at booking and record it, and include a way to stop. Rules vary by state and situation, so your own counsel has the final word.

What should happen when someone replies cancel?

Treat it as a request to stop texts, because the FCC's rule lists cancel as a way to revoke consent. Then have a person call or email about the appointment, since they may also mean cancel the visit.

Sources

  1. Cochrane Database of Systematic Reviews, via PubMed, Mobile phone messaging reminders for attendance at healthcare appointments (2013 review). https://pubmed.ncbi.nlm.nih.gov/24310741/, accessed November 1, 2026.
  2. HighLevel Support Portal, Calendar: Email, In-App, SMS and WhatsApp Appointment Notifications. https://help.gohighlevel.com/support/solutions/articles/155000003441, accessed November 1, 2026.
  3. CTIA, Messaging Principles and Best Practices (May 2023). https://api.ctia.org/wp-content/uploads/2023/05/230523-CTIA-Messaging-Principles-and-Best-Practices-FINAL.pdf, accessed November 1, 2026.
  4. Electronic Code of Federal Regulations (FCC rule), 47 CFR 64.1200, Delivery restrictions. https://www.ecfr.gov/current/title-47/chapter-I/subchapter-B/part-64/subpart-L/section-64.1200, accessed November 1, 2026.

Researched and drafted with AI from the sources listed. Reviewed and approved by Marcus Barber before publishing.

Digital Solomon runs GoHighLevel, Pabbly Connect and Ranked.ai in its own work. They are the only tools these guides name. This page has no affiliate links.

Digital Solomon also builds client systems on GoHighLevel.

Find out where you stand.

Eight questions, about five minutes. You see your result right away, and a written audit follows by email within minutes.

Get your AI Readiness Audit