Booking Confirmations Have 98% Open Rates: The Fix

A booking confirmation email has a 98% open rate. Not 30%. Not 50%. Ninety-eight per cent. Almost every person who books an appointment opens the confirmation, usually within the first hour, often within the first five minutes.

Your average newsletter open rate is 22%. Your best-performing promotional email is maybe 40%. The confirmation email — the one most clinics write once and forget about — is the single highest-engagement piece of content your business will ever send. And almost everyone wastes it on "Your appointment is confirmed for Tuesday at 2pm. See you then."

This is the post about what to put in there instead. It's relevant whether you're running Cliniko, HotDoc, Acuity, Calendly, a custom-built system, or pen and paper. The principles are the same. The execution varies.

The case for boring confirmations

To be fair, there's a reason most confirmations are boring. The booking is already made. The customer has already paid (or committed to paying). The transactional purpose of the email is technically complete.

Some practices also worry — legitimately — about over-communicating. A wall of upsell content in a confirmation email reads as desperate. Customers booking with a healthcare provider don't want a marketing pitch when they're trying to confirm their physio appointment.

Both concerns are valid. The fix isn't to stop using the confirmation as marketing — it's to be careful and useful about what you say. The flows we're about to describe are not pushy. They're better service. The marketing benefit is the side effect.

The numbers that should make you care

The evidence on this isn't marginal. An observational study at Barts and the London Hospitals NHS Trust found ophthalmology outpatients who received an SMS reminder had an 11.2% non-attendance rate, against 18.1% for patients who didn't get one — the best part of a 40% relative reduction, from a single text message. No-show rates without any reminder system running commonly sit anywhere from 15% to 30% across outpatient healthcare and allied health settings, depending on the specialty.

The cost side is trivial by comparison. An SMS via ClickSend or MessageMedia in Australia runs 7-9 cents.

For a clinic doing 600 bookings a month at an average value of AU$150, even a conservative version of that reduction — taking a 20% no-show rate down to 13% — is worth roughly AU$6,300 a month in recovered revenue. The SMS cost to reach every one of those bookings is under AU$100.

The maths is offensive. It's surprising how many clinics still don't run a proper reminder flow.

The seven-touch flow that actually works

This is the framework we build for clinics doing custom booking systems, and it's what we recommend even for clients staying on Acuity or Cliniko. Adapt to your industry — an allied health practice running a rehab plan over six sessions needs a different rhythm to a one-off consult, which is part of what a physio clinic website has to get right before the confirmation email ever sends.

Touch 1: Immediate booking confirmation (sent within 30 seconds)

What it includes:

Clear confirmation of date, time, service, practitioner, and location
Add to calendar buttons (Google, Apple, Outlook — not just one)
Address and parking info with a Google Maps link
Pre-appointment instructions specific to the service (what to wear, what to bring, what to eat or avoid)
Rescheduling link that actually works (one click, not "log in to your account")
Practitioner's first name and a photo if appropriate — humanises the appointment

What it shouldn't include:

Promotional content about other services
Social media links above the fold
Anything that looks like a marketing email

The tone is helpful and specific. The job is "make the customer feel like everything is sorted." A confirmation email that does that well gets shared with partners ("just confirmed my appointment, here's the address") and screenshots its way around the customer's life. That's distribution you can't buy.

Touch 2: Pre-appointment SMS (48-72 hours before)

A single SMS with the time, practitioner name, and one-tap reschedule link. That's it.

Hi Sarah, this is a reminder your appointment with Dr Patel is on Tuesday 14 May at 2:00pm. Reply YES to confirm or RESCHEDULE to change.

Australian SMS character limits to know: a standard SMS is 160 characters, and most clinical reminder templates blow through that into 2-3 segments. At ClickSend pricing of AU$0.072 per segment, a three-segment reminder costs AU$0.22. Worth keeping templates tight.

Touch 3: Pre-appointment email (24 hours before)

This is the one most clinics skip. A short email that recaps:

The appointment details (in case the original is buried)
Anything they need to bring (Medicare card, referral, treatment notes from elsewhere)
The cancellation policy, restated kindly
An offer to message back with any questions

Don't repeat the marketing-free rule here. The 24-hour email is not the place to upsell. The job is to make sure the customer turns up prepared.

Touch 4: Day-of SMS (2-3 hours before)

The final reminder. Most no-shows happen because someone forgot, got distracted, or had a minor schedule conflict that became a major one. The day-of SMS catches those.

Hi Sarah, your appointment with Dr Patel is at 2:00pm today. Suite 4, Level 2, 14 Bourke St. Reply RUNNING LATE if you're delayed.

The "reply RUNNING LATE" line is underrated. It gives customers an out other than no-showing — it catches the borderline cases, the ones who were going to be ten minutes late and were about to decide not to bother at all.

Touch 5: Post-appointment thank-you (4-6 hours after)

This is where most clinics start blowing the opportunity. The typical post-appointment email is generic, sent the next day, and goes straight to the promotional tab.

What works better:

Sent 4-6 hours after the appointment, not the next morning (catches the customer while the experience is still fresh)
From the practitioner's name, not the business name ("Dr Patel" not "Coastal Physio")
A short personal note thanking them for coming in
A single line about what's next — when to book the follow-up, what exercises to do at home, what to watch for
A review request, but only after the second or third visit, not the first

Sample:

Subject: Following up on your session today

Hi Sarah,

Thanks for coming in this afternoon. Just a reminder of the three stretches we worked through — there's a short video at this link if you want a refresher.

Based on what we found, I'd recommend booking your follow-up for around the 28th. You can do that here, or reply to this email and I'll sort it.

Any questions, just reply.

— James

This email gets opened. It gets replied to. Done consistently, it turns a meaningful share of first-time visits into a booked follow-up, without ever reading like a sales pitch.

Touch 6: Follow-up reminder (3-7 days after, only if no re-booking yet)

If the customer hasn't re-booked after the post-appointment email, a single follow-up nudge. Light touch. One paragraph. Not promotional.

Hi Sarah, hope the stretches are helping. Just checking in — let me know if you'd like to book the follow-up we discussed. Happy to find a time that works.

It won't convert everyone, but it reliably picks up a further slice of the audience who didn't respond to the first nudge. Between the two follow-ups, a solid share of first-time customers end up back on the books — well ahead of what a generic "thanks for visiting" email ever achieves.

Touch 7: Re-engagement (60-90 days after the last appointment)

This is the only touch in the flow that's properly promotional, and it's the touch most clinics over-rely on. The mistake is sending this email instead of touches 5 and 6, not in addition to them.

What works: a personal email from the practitioner referencing the customer's specific situation. "It's been about three months since we worked on your shoulder, just checking how it's holding up." Not a generic newsletter blast.

Some practices have this touch handed to them by the clinical calendar. Vaccination boosters, annual health checks and parasite prevention all fall due on a known date, which is why a vet clinic's recall reminders convert better than almost anything else on the site — the reason to make contact is already in the record.

The SMS rules nobody tells you

A few Australian-specific things to know about SMS reminders:

Sender ID matters. Sending from a generic shortcode looks like spam. Sending from your business name (which ClickSend and MessageMedia both support in Australia) looks legitimate.
Unsubscribe is legally required. Under the Spam Act 2003 and the Australian Privacy Principles, commercial messages need a way to opt out. Transactional reminders are slightly different, but the safe default is to include "STOP to opt out" on anything that could be construed as marketing.
Time-of-day matters. Sending reminder SMS between 9pm and 7am is a fast way to get complaints. Most reminder systems let you set a quiet window.
Character economy matters. A 161-character message costs twice as much as a 160-character one. Templates with the customer name, time, and location can usually be tightened to fit one segment if you write them carefully.

What clinics on Cliniko, HotDoc, and Acuity should actually do

Most clinics don't need a custom system to run a good confirmation flow. They just need to use the one they have properly. Quick guidance by platform:

On Cliniko: You can customise the booking confirmation email per appointment type. Most clinics use the default template forever. Spend two hours rewriting the templates for your top three appointment types and you'll get most of the win.

On HotDoc: SMS reminders are included in the subscription and can be customised. The patient communication module is decent. The post-appointment automation is weaker — that's usually where a custom flow on top adds value.

On Acuity: Confirmation templates are customisable per appointment type. SMS costs extra per message. The post-appointment workflow needs to be built via Zapier or a similar tool — Acuity doesn't do it natively.

On Calendly: Confirmation customisation is limited. If your booking flow needs strong confirmation UX, Calendly is the weakest of the major tools for this.

The one mistake worth calling out

The biggest mistake in most confirmation flows isn't tone, isn't timing, isn't tooling. It's inconsistency.

A clinic sets up a beautiful reminder flow for their main physio. The new dietitian who joins three months later gets the default template. Then the new podiatrist gets a different template the practice manager copied from somewhere. Six months in, the reminder experience varies wildly by practitioner, and the no-show rate is uneven across the practice.

The fix is having one template library, owned by one person, with a quarterly review. Not glamorous, but it's the difference between a reminder system that holds a no-show rate down for good and one that slowly drifts back to where it started.

Where to start if you're starting from zero

If your current reminder flow is "Acuity's default settings," the highest-impact 90 minutes of work you can do this month is:

Rewrite the confirmation email for your top three services, with specific pre-appointment instructions
Set up the 48-hour SMS reminder if you don't have one
Add a day-of SMS if you can afford it (it's worth it)
Write one post-appointment email template per practitioner

That's it. You can do all four in a Tuesday afternoon. The no-show reduction usually shows up in the next billing cycle.

If you want help designing the full flow — the one that actually moves repeat bookings, not just no-shows — book a free audit. We'll look at what you're sending now, where the gaps are, and what's worth building.