A practical guide to choosing reminder channels, timing the sequence, and automating the whole process so fewer patients forget.
Missed appointments are one of the most expensive problems a private clinic faces, and most of them are preventable. Patients rarely skip on purpose. They forget, they double-book, or they mean to cancel and never get round to it. A reliable reminder reaches them before any of that happens.
The difficulty is that manual reminders do not scale. A receptionist phoning every patient the day before is accurate but slow, and the task is the first thing to slip on a busy morning. Automated appointment reminders solve this by sending a scheduled message to every booked patient without anyone lifting the phone.
This guide sets out how clinics can set up automated reminders that actually reduce no-shows: which channels to use, how many reminders to send and when, what each message should say, and how to connect the whole sequence to the practice management system so confirmations and cancellations update on their own.
What automated appointment reminders are
An automated appointment reminder is a message sent to a patient ahead of a booked appointment by software rather than by a member of staff. The system watches the diary, and when an appointment approaches it sends a pre-written reminder by SMS, email, WhatsApp or automated voice call at a set interval, for example three days and one day before.
Manual reminders depend on someone having time to make the calls. Automated reminders remove that variable. Once configured, the sequence runs for every appointment type the clinic selects, on schedule, whether the front desk is busy, short-staffed or closed.
Why automated reminders reduce no-shows
The evidence for reminders is strong and consistent across decades of research. They work because they tackle the single most common reason patients miss appointments: they simply forget.
A systematic review in the Journal of the Royal Society of Medicine found that automated reminders, by SMS or automated phone call, reduced non-attendance by around 29% of the baseline rate. Reminder calls made by staff did slightly better at 39%, but cost far more per reminder.
SMS is the most reliable channel for reaching patients in time. Research from Imperial College London found that text reminders cut no-show rates by 38%. Text messages have a 98% open rate and are typically read within 90 seconds, which is why they reach patients faster than any other channel.
Timing matters as much as the channel. A randomised trial in the American Journal of Managed Care covering more than 54,000 patients found that two reminders, sent three days and one day before the appointment, outperformed a single reminder. Among high-risk patients, two reminders cut missed appointments to 20.5%, against 25% for one, with no drop in patient satisfaction.
Choosing the right reminder channels
Most clinics get the best results from a primary SMS reminder, supported by email for detail and an automated voice call for higher-value or first appointments. The right mix depends on the patient base and the type of booking.
| Channel | Strengths | Best used for |
|---|---|---|
| SMS | Around 98% open rate, read within minutes, supports a direct reply to confirm or cancel | The primary reminder for almost every appointment |
| Room for detail: preparation instructions, directions, intake forms and policies | Booking confirmations and longer pre-appointment information | |
| Familiar to many patients, supports links and rich content, two-way | Patients who prefer messaging apps to standard texts | |
| Automated voice call | Reaches patients who ignore texts, harder to overlook | First appointments, higher-value bookings, and patients less comfortable with texts |
A single reminder instance can combine more than one channel. A common pattern is an SMS three days out, followed by an automated voice call the day before for new patients, whose no-show rates tend to be highest.
How to set up automated appointment reminders, step by step
The mechanics are similar across most reminder tools. The steps below use BookedSolid as the worked example, with the underlying principle noted at each stage so the approach transfers to any system.
Step 1: Create a reminder instance
In BookedSolid this lives under Outbound, then Create Automatic Instance, then Appointment Reminders. Give the instance a clear name, such as New Patient Reminders or Physio Follow-ups, so it is easy to manage later. Separate instances can be created for different appointment types, each with its own timing and wording. The full walkthrough sits in the appointment reminders setup guide.
Step 2: Choose the channel and write the message
Set whether each run goes out by SMS or automated call, and write the exact text the patient receives. Keep it short, name the clinic, and state the date and time. More than one run can be added across different channels, so a clinic can send a text first and a voice call closer to the appointment.
Step 3: Set the timing and number of reminders
Choose how many days ahead each reminder sends and at what time of day. The research points to two reminders, roughly three days and one day before. Sending during business hours, when patients can act on the message, works better than late at night.
Step 4: Select the appointment types
Decide which appointment types the instance runs on. A clinic might remind for all in-person appointments but exclude telehealth, or apply a stricter sequence to new patients only. Matching the reminder to the appointment type keeps every message relevant.
Step 5: Turn on replies and confirmations
Reminders work hardest when patients can respond. Allowing a direct reply to confirm, reschedule or cancel turns a one-way message into a way to free up slots early. In BookedSolid the patient replies to the reminder itself, and the booking updates automatically. The same logic powers appointment confirmations as a parallel outbound flow.
Step 6: Handle non-responses and sync back to the diary
Decide what happens when a patient does not respond. BookedSolid can send an incomplete-reminder email that flags patients who have not confirmed, so the front desk can follow up by exception rather than chasing everyone. Every confirmation, reschedule and cancellation writes back to the practice management system, so the diary stays accurate without manual updates.
Automated appointment reminders in BookedSolid
BookedSolid sends multiple reminders per booking across SMS, email, WhatsApp and automated voice call. Patients reply directly to confirm, reschedule or cancel, and every change syncs back to Cliniko, Nookal, PracticeHub, coreplus or PracSuite in real time.
What a good reminder message says
A good reminder is short, specific and easy to act on. It gives the patient everything needed at a glance and a clear way to respond. The strongest reminders share a few traits:
- The clinic name, so the message is recognised immediately.
- The appointment date, time and practitioner, stated plainly.
- A simple instruction to confirm, reschedule or cancel by replying.
- Any essential preparation, kept brief, with the detail moved to email.
- A human tone, so it reads like a clinic and not a system alert.
Hi Sarah, this is a reminder of your physiotherapy appointment with James on Tuesday 12 May at 2:30pm at Riverside Clinic. Reply YES to confirm, or call 01234 567890 to change it.
Connect reminders to the rest of the front desk
Reminders deliver the biggest gain when they are connected to the systems around them rather than run in isolation. A reminder that frees a slot is only useful if that slot then gets filled.
Live write-back to the practice management system means a patient who reschedules from a reminder updates the diary directly, with no double entry. BookedSolid reads and writes to the clinic's existing system, so reminders, confirmations and cancellations all stay in sync.
Pairing reminders with an automated waitlist means a cancelled appointment is offered to the next patient in line within minutes, recovering revenue that a reminder alone would simply release. Because the system runs around the clock, a patient who replies at 9pm still has the change recorded, rather than reaching a voicemail.
Reminders are one lever in a wider no-show strategy. For the full picture, including deposits and easy rescheduling, see the wider guide to reducing no-shows. The same outbound engine also powers automated patient recalls for routine return visits, so one setup keeps the diary full from several angles.
Keep the clinic diary full
BookedSolid sends automated appointment reminders across every channel, lets patients confirm or reschedule in a tap, and writes every change back to Cliniko, Nookal and the rest.
Frequently asked questions
How many appointment reminders should a clinic send?
Two reminders work better than one. A large randomised trial found that messages sent three days and one day before an appointment reduced missed visits more than a single reminder, with no effect on patient satisfaction. A booking confirmation at the time of scheduling, followed by those two reminders, is a reliable default.
Which is better for reminders, SMS or email?
SMS is the stronger primary channel, because almost all texts are opened and read within minutes. Email is useful alongside it for detail that does not fit a short message, such as preparation instructions, directions or forms. Many clinics use both: a brief SMS reminder and a fuller confirmation email.
When is the best time to send an appointment reminder?
During the day, when patients can act on the message. A reminder three days out gives enough notice to rearrange, and a final reminder the day before catches anyone who has forgotten. Late-night messages are more likely to be missed or ignored.
Do automated reminders work without a practice management system?
They can run as standalone messages, but they are far more useful connected to the diary. When reminders read and write to the practice management system, confirmations and cancellations update automatically and freed slots can be offered to other patients. BookedSolid integrates with Cliniko, Nookal, PracticeHub, Splose and Semble for exactly this reason.
Can an AI receptionist handle reminders as well as calls?
Yes. An AI receptionist such as BookedSolid sends automated reminders, takes the patient's reply to confirm or reschedule, answers the phone around the clock and books directly into the practice management system. Reminders become one part of a front desk that also handles bookings, cancellations and follow-ups.



