Appointment reminder text templates

What a reminder text includes

A reminder text does its job when the customer can read it once and know what to do next. Every message in this guide carries the same core parts, in roughly the same order.

• The person's first name
• Your business name
• The appointment date and time
• The location or address, when the customer needs it
• A way to confirm or reschedule

The business name matters because the customer may not have your number saved, and a message that arrives without a name reads like spam.

A way to respond matters because it lets the customer confirm the booking or change it from the message itself, without a phone call.

The templates below put these parts together for seven of the most common reminder situations.

Appointment reminder templates

Each template below is a complete message, ready to copy and edit for your own business. The first one is loaded into the counter at the top of this page, which measures the length and the cost of a message.

A standard reminder the day before the appointment gives the customer the facts and asks for nothing in return.

• "Harbour Physio: your appointment with Sam is on Thu 16 Oct at 9:15am at 12 Main St, Manly. Please arrive 5 minutes early." (121 characters, one SMS)

A reply-to-confirm reminder asks the customer to answer, so you know who is coming and who is not.

• "Bayside Dental: your check-up with Priya is on Fri 17 Oct at 2:00pm. Reply C to confirm or R to reschedule." (107 characters, one SMS)

A reminder with preparation steps tells the customer what to bring or do before the appointment.

• "Coastline Vet: your cat's vaccination with Jack is on Sat 18 Oct at 11:00am. Please bring her in a secure carrier." (114 characters, one SMS)

A reminder with a reschedule link suits a business that sends from a sender ID and cannot receive replies.

• "Northside Auto: your service booking is on Mon 20 Oct at 8:00am. You can tap the link to change your time if the day no longer suits." (133 characters, one SMS)

A reminder that states a cancellation policy tells the customer what a late change will cost.

• "Harbour Physio: your session with Mia is on Wed 22 Oct at 4:00pm. Cancellations within 24 hours may incur the full fee." (119 characters, one SMS)

A week-ahead reminder suits a booking made long in advance, when the original date may have slipped the customer's mind.

• "Coastline Vet: your dog's annual check-up with Jack is on Mon 27 Oct at 3:30pm. Please call 07 5550 1234 to change the time." (124 characters, one SMS)

A follow-up after a missed appointment invites the customer to rebook while the missed visit is still fresh.

• "Bayside Dental: your appointment with Priya on Tue 14 Oct was missed. Reply BOOK to rebook or call 5550 4321." (109 characters, one SMS)

Two of the templates above ask for a reply, and whether a reply works depends on what the message is sent from.

Send from a number or a sender ID

A sender ID shows your business name as the sender, in place of the phone number your customers would otherwise see. ACMA says people generally cannot reply to an SMS sent with a sender ID, so reply-based processes sent from one do not work.

A reminder that asks for a reply therefore needs a dedicated or shared number. MessageWorks says replies are not possible from a sender ID and need a dedicated or shared long number. SMS Broadcast recommends a dedicated virtual mobile number for appointment confirmations and reminders.

A reminder sent from a sender ID offers a reschedule link or a phone number instead of a reply option. ClickSend's appointment SMS guide says a message sent from an alpha tag cannot receive replies, so it recommends a reschedule link instead of reply-to-confirm. The Northside Auto and Coastline Vet templates above take that approach.

ACMA adds a registration rule for sender IDs. Since 1 July 2026 a sender ID must be registered on the SMS Sender ID Register, or it shows as "Unverified". A business sending from a phone number does not need to do anything.

The choice of sender settles who can reply, and the next question is when the reminder should go out.

When to send a reminder

Most providers land on the same window. ClickSend's healthcare guide says most practices send appointment reminders 24 to 48 hours before the appointment. SMSGlobal calls that timing ideal, depending on your cancellation policy, and Esendex says it is the best time for most clinics. A Sinch Engage guide calls the same span the critical reminder window, and Cellcast recommends service appointment confirmations 48 hours in advance, at 9:00 AM.

Some providers add a second reminder closer to the appointment. Kudosity says appointment reminders work best 24 hours before, followed by a second reminder 1 hour before. Sinch Engage recommends one reminder 24 hours before and a second 2 to 4 hours before. SMS Broadcast suggests a booking reminder 24 hours before and potentially another 1 hour before.

Bookings made well in advance need an earlier reminder. For bookings made more than a month ahead, Esendex recommends an earlier reminder about 7 days before, then a confirmation request 24 to 48 hours before. Textmagic advises a first text one week ahead for medical appointments or service bookings, with a second reminder 1 to 2 days before.

The research is relaxed about the exact day. The 2011 review by Hasvold and Wootton covered 29 hospital studies and found no apparent difference in non-attendance whether the reminder went out the day before or the week before the appointment. Every study in that review sent reminders within a week of the appointment, a lead time the authors judged appropriate.

Whichever day you pick, the goal is fewer no-shows.

Do reminder texts reduce no-shows

A 2013 Cochrane review of 8 randomised controlled trials, with 6,615 participants in total, found moderate-quality evidence that text message reminders improved attendance compared with no reminders. The Cochrane review reported a risk ratio of 1.14, with a 95% confidence interval of 1.03 to 1.26. Attendance in the Cochrane review was 67.8% with no reminders, 78.6% with text message reminders and 80.3% with phone call reminders.

The 2011 review by Hasvold and Wootton found a weighted mean relative reduction in non-attendance of 34% of the baseline rate, with 29% for automated reminders against 39% for manual phone calls. The review counted SMS and automated calls together as automated reminders.

The same 2011 review lists an Australian study (Downer, 2006), which was a before-and-after comparison rather than a trial. The Downer study sent automated SMS reminders over 3 months, with a study size of 45,110, compared retrospectively with the previous year. Downer reported non-attendance of 9.8%, down from a baseline of 19.5%.

The rules for reminder texts are the next thing to check, because even a factual message must meet legal requirements.

The rules for reminder texts

A purely factual reminder is a designated commercial electronic message under the Spam Act 2003. Designated messages are exempt from the consent rule and the unsubscribe rule. They must still identify who authorised the message and how to contact them, and those details must stay correct for at least 30 days after the message is sent.

ACMA tells consumers that appointment or payment reminders are generally not spam. The exemption holds only while the message stays factual.

Adding a promotion, or a link to one, changes the message's legal status. ACMA says a message that offers, advertises or promotes a product or service must comply with spam laws even when the promotion is only one part of the message. ACMA's Chair has said a factual message that also includes marketing content, or links to marketing content, can only be sent with consent. Such a message needs consent and a clear, working unsubscribe that honours requests within 5 working days.

Health reminders have their own guidance on consent. OAIC guidance for health service providers, published in November 2017, says it is generally reasonable to imply a patient's consent to a reminder to attend a scheduled longer appointment.

With the message written and the rules settled, the last choice is who sends the reminders.

Choosing a reminder provider

A reminder that takes replies needs a provider that offers two-way SMS and a dedicated or shared number. The site's comparison of SMS reminder services lists the providers that offer both, so you can match a plan to the templates above.