WhatsApp for business: reminders, confirmations and booking done right

Three ways, three different things

When a business owner says "I work with WhatsApp", they can mean three entirely different things:

The app is a conversation. The API is infrastructure. A scheduling system connected to the API is a small business's way to get the infrastructure without building it: the reminder goes out at the hour you set, in an approved template, with a cancellation link, and you never touch the phone.

What you may send

Meta's rules are simple once you grasp the basic distinction: who started the conversation.

• The client wrote to you. From their message a 24-hour window opens in which you can answer in free text, like an ordinary conversation. That is the "hi, is there an appointment tomorrow?" situation.
• You write to the client. A message the business initiates — a reminder, a confirmation, a notice of a change — must be a template submitted to Meta and approved in advance, under the template guidelines, with variables in the right places ("Hi {name}, a reminder for your appointment tomorrow at {time}"). And it goes only to someone who agreed to receive messages from the business, under the Business Messaging Policy.

Consent is where businesses trip. A client who booked on the booking site and ticked that they agree to receive messages about the appointment has consented. A client whose number sits in an old list has not. And most countries add an anti-spam law on top: advertising (a promotion, a discount, "we are back from holiday") needs explicit, separate consent in writing, with a way to opt out, and a breach is compensation per message.

What it costs

Meta prices template messages by category — utility, marketing or authentication — and by the recipient's country, and publishes the prices on its pricing page. Replies within the 24-hour window after the client wrote to you are not charged as templates. On top of that the provider that connects you to the API adds its share, and your system prices it all in message bundles.

The question worth asking is not "what does WhatsApp cost" but "what does one message cost me, and how many messages do I send a month". One appointment is usually a confirmation and a reminder; a business with two hundred appointments a month sends about four hundred messages. Compare that with the price of an SMS and with the price of one appointment cancelled because there was no reminder.

What works best for a small business

The experience of small businesses points to one combination that works:

What does not work: running the calendar inside WhatsApp conversations. After a month nobody can find who booked what, cancellations get lost between messages, and there are no reminders. WhatsApp is how the client reaches the calendar, not the calendar.

Booking through WhatsApp

Clients love to write "is there an appointment tomorrow?". The question is what happens next. Three levels:

• By hand. You answer, offer a time, the client confirms, you write it in the calendar. Works for ten appointments a week; not for fifty.
• An auto-reply with a link. The client gets a link at once, sees the free times, books. You see the appointment in the calendar without having answered. That is the big leap.
• An AI agent on WhatsApp. An assistant that understands the request, asks the calendar which times are free, offers, and books after a confirmation. In the end it too writes to the same calendar and respects the same rules; the difference is that the client never leaves the conversation.

At all three levels the appointment lives in the system's calendar, not in the chat. The reminder, the cancellation, the waitlist and the client card work from the calendar.

How it works in Torly

In Torly, reminders and confirmations go out on WhatsApp through Meta's API, in approved templates, in the language the client booked in, at the hour you set, with a link to cancel and to move. When the client has no WhatsApp or the message was not delivered, it goes out by SMS automatically. Consent is collected on the booking site at booking and kept on the client card; advertising needs a separate consent. Messages are bought in bundles at a price per message written in advance. And "is there an appointment tomorrow?" is solved with a link to the booking site in the auto-reply, or with the AI phone agent and booking through ChatGPT, which write to the same calendar.