Definition
What are appointment reminders?
Automated messages sent to the client before their appointment so they do not forget to come. Done well, they reduce no-shows by 30-50 %. Done badly, they create noise and nobody reads them.
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An appointment reminder is an automated message your system sends to the client before their confirmed appointment to reduce the likelihood they forget. What seems trivial is one of the most profitable levers in any business that charges per session: a well-designed reminder chain reduces no-shows consistently, and every avoided no-show is recovered revenue at no extra cost.
The most common channels are WhatsApp, SMS and email, in that order of effectiveness for proximity services in Spain. WhatsApp has the highest open rate (close to 95 %) because people read their messages within minutes. SMS works well as backup. Email is the weakest here: many emails go to spam or get buried.
The difference between a reminder that works and one that annoys is in three details: timing (24 h before and 2 h before), format (short, clear, with confirm/cancel option) and personalisation (service + professional + address + a human touch). If all three are calibrated, the client appreciates it. If they are off, they mute it.
Why they reduce no-shows
No-shows are rarely deliberate. Most forgotten appointments are memory failures: the client booked 3 weeks ago, has dealt with 200 things since then, and the day simply did not come to mind. A reminder 24 hours before resolves this because it gives them time to reorganise if they got the day wrong.
The second reminder (2 hours before) covers "oh yes, it is today, I am running late but I will make it" — it serves as a micro-push at the exact moment the person can act. Studies and practices in healthcare have long confirmed that a 24-hour reminder reduces no-shows by 30-50 % depending on the type of service. In beauty and hair salons, the effect is often stronger combined with a deposit.
WhatsApp vs SMS vs email: which to choose
WhatsApp is the number-one channel in Spain for proximity services. Very high open rate, immediate reading, ability to include confirmation buttons and cancellation links. The catch is that to send templates initiated by the business (reminders fall in this category) you need WhatsApp Business API and client consent. Marai handles both from origin.
SMS remains useful as backup, especially for older clients or those who do not actively use WhatsApp. Open rate also very high, immediate delivery, but without buttons or rich links.
Email is the weakest for appointment reminders: high non-open rate, spam risk, delayed reading. It serves as detailed initial confirmation (with proforma invoice, cancellation policy and address with map) but the reminder itself is more effective via WhatsApp or SMS.
When to send them: the cadence that works
The proven cadence in appointment businesses is two touches: 24 hours before and 2 hours before. The first gives time to cancel or change; the second is the final push. Some sectors (medical, dental) add a third one at 7 days for control appointments booked far in advance.
More reminders is not better: after the third message in 24 hours, the client perceives it as harassment. Fewer is not better either: only 24 h before leaves last-minute forgets uncovered. Practical rule: 24 h + 2 h and, if the appointment is 7+ days away, an extra confirmation at 3 days.
What if the client does not confirm
Here is the second level of good reminders: confirmation with response. A quality reminder lets the client confirm (yes, I will be there) or cancel/reschedule (I cannot, give me another time) right from the message. If they confirm, the system marks the appointment as confirmed and reduces no-show probability. If they cancel with enough notice, it releases the slot for another client and, if there was a deposit, it refunds or reuses it.
A reminder with no response button is just a notice. A reminder with buttons is an active management tool. The difference shows up in month-end revenue.
Marai is appointment-management software with an AI WhatsApp bot, automated reminders and Stripe payments. Built for Spain and the EU, with native GDPR compliance and 0 % booking commissions.
Frequently asked questions
The most important answers before you pick an appointment software.
How much do they reduce no-shows?
In practice, a WhatsApp 24h + 2h chain reduces no-shows by 30-50 % depending on the industry. Combined with a deposit at booking, the reduction can reach 70-80 % in services where deposits are common.
Do I have to write each reminder by hand?
No. A serious system (like Marai) sends them automatically with configurable templates. You define the text once with variables ({name}, {service}, {time}, {professional}) and they go out via WhatsApp or SMS without you touching anything.
Are they GDPR-compliant?
Yes, if the client gave consent at booking (which should be standard in any modern booking form). Consent must be explicit, recordable and revocable. Marai manages it as part of the booking flow.
Do they work the same across industries?
They work in all but the optimal cadence varies: hair salon and beauty, 24 h + 2 h. Dental clinic, +7 days for scheduled check-ups. Coaching, 24 h usually enough. The rule is to adjust to the service’s "memory footprint" in the client’s mind.
Are they compatible with confirmation discounts?
Yes, and they combine very well. A reminder saying "confirm your appointment and we will apply 5 % discount if you arrive 5 minutes early" improves both confirmation and punctuality. Marai allows conditional logic without coding.
Keep exploring
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The most common questions
The questions we get every week — answered straight, no fluff.
Do I need a credit card to start?
No. The free plan is permanent and never asks for a card. You can be live in under 5 minutes with just your email and a mobile number.
How long does setup take?
Around 5 minutes. Import your services, connect your WhatsApp Business number and publish your booking portal. No installs, no training required.
Will I lose my data when migrating?
No. We offer a guided migration from Fresha, Booksy, Calendly and spreadsheets. Clients, services and appointment history all carry over.
Is it hard for my team to use?
No. Marai is designed for non-technical staff: a clear interface, human support and onboarding included. Your team gets it on day one.
Is it GDPR compliant?
Yes. EU-hosted servers, AES-256 encryption at rest, processing records ready for the data protection authority, and digital consent for your clients.
Can I cancel anytime?
Yes. No lock-in, no penalty. One click to cancel and you can export all your data as CSV at any time.
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