Every dental practice sends appointment reminders, but practices disagree about the best way to do it. SMS is cheap, fast and what most patients expect. Phone calls feel more personal and can catch people who ignore texts. Email is useful for forms and longer information. So which should you use?
The honest answer is: use each channel for what it does best, and match the channel to the patient and the appointment. This guide explains how.
Key takeaways
- SMS is the best default for most reminders: it's quick, cheap and easy to reply to.
- Phone calls work best for high-value or long appointments, new patients, patients with a history of missing visits and patients who don't use SMS.
- Email suits confirmations, forms and pre-visit information, not last-minute reminders.
- Two-way reminders, where patients can confirm or reschedule by replying, matter more than the channel itself.
- Track no-shows by channel and patient group so you can see what works for your practice.
SMS reminders
Strengths
- Most patients carry a mobile and read texts quickly.
- Cheap to send at scale, and easy to automate from your practice software.
- Easy to reply to: "Reply Y to confirm or call us to reschedule."
- Unobtrusive. Patients can read them in a meeting or on the train.
Weaknesses
- Easy to ignore or forget after reading.
- Wrong or outdated mobile numbers mean reminders silently fail.
- Limited space for detail.
- One-way texts that say "do not reply" waste the best feature of SMS.
Phone call reminders
Strengths
- A real conversation makes the appointment feel more important.
- You can reschedule there and then, filling the slot with someone else if needed.
- Works for patients who don't text, including some older patients.
- You find out immediately if a number is wrong.
Weaknesses
- Time-consuming for staff, and many calls go to voicemail.
- Calls at the wrong time can annoy patients.
- Hard to do consistently on busy days, which are exactly when they're most needed.
Automated voice reminder calls change some of this. An AI agent can make reminder calls at scale, have a natural conversation, confirm or reschedule the appointment and update your calendar, without taking staff time.
Email reminders
Email is good for:
- Booking confirmations with full details, a map and parking information
- New-patient forms and medical history questionnaires
- Pre-treatment instructions
- Longer recall messages
It's less effective as a last-minute reminder, because many people don't check email often, and messages can land in spam folders.
Matching the channel to the appointment
A simple framework:
- Routine check-up and clean: SMS reminder 2–3 days before, with reply to confirm.
- Long or high-value treatment: SMS plus a phone call, from staff or an AI agent, a few days before so there's time to fill the slot if it's cancelled.
- New patients: email confirmation with forms and directions, then an SMS reminder.
- Patients with previous no-shows: add a phone call and ask for an explicit confirmation.
- Patients who prefer calls: respect it, and record the preference in their file.
Making reminders two-way
Whichever channel you use, the biggest improvement usually comes from letting patients respond:
- Confirm with a single reply
- Reschedule by reply or by calling a line that's always answered
- Cancel without awkwardness, so you can offer the slot to someone else
A cancellation two days out is far better than a no-show on the day, because you can fill it. See our waitlist playbook for last-minute cancellations.
Getting the wording right
Good reminders, in any channel, include:
- The practice name, so patients know who it's from
- The patient's first name
- Day, date, time and dentist
- One clear action: confirm, reschedule or call
- Any preparation, such as arriving early for forms
Avoid promotional add-ons in reminders. Purely factual reminders are generally treated differently under the Spam Act from marketing messages, and mixing the two can change the rules that apply. Our Spam Act guide explains more.
Measuring what works
Track these monthly:
- No-show rate overall and by patient group
- Confirmation rate by channel
- Late cancellations (less than 24 or 48 hours' notice)
- Slots refilled after cancellations
If you change channels or timing, compare a few months before and after. Our front desk KPIs guide covers how to set this up.
Frequently asked questions
Do patients prefer SMS or phone calls?
Preferences vary. Many patients prefer SMS for routine reminders, while others prefer a call. The simplest approach is to ask at booking and record the preference.
How many reminders should we send?
Usually one or two per appointment is enough, with more contact for long appointments or patients who've missed visits before. See the ideal reminder schedule.
Are automated reminder calls annoying?
They can be if they're robotic or badly timed. Calls that are short, sound natural, come at sensible times and let the patient confirm or reschedule in one step are generally well received.
Next steps
Review which reminders you send today and make sure every one of them allows a reply. To add automated reminder calls and two-way SMS, book a demo of IntelliDent's reminder agent.