Most clinics start with the free WhatsApp Business app on the receptionist's phone. It works until the clinic wants automatic reminders, more than one person answering, or replies at 11 pm. That is where the WhatsApp Business API comes in.
The app and the API are different products
- The WhatsApp Business app runs on one phone (plus linked devices). Someone types every reply by hand.
- The WhatsApp Business API connects a number to software. Replies, confirmations and reminders can be sent automatically, and several people can work from one inbox.
Two rules every clinic should know
The 24-hour window. When a patient messages you, you can reply freely for 24 hours. After that, a business can only start a conversation with an approved template.
Templates are approved by Meta and come in categories. Appointment confirmations and reminders belong in the utility category. Promotional messages are marketing. The category matters in practice: marketing messages can be held back by WhatsApp even when the send appears to succeed, so a reminder sent as marketing may never arrive. Keep reminders strictly factual and in utility templates.
What a clinic needs to get started
- A phone number for the clinic's WhatsApp, which can be your existing business number.
- A verified Meta business account in the clinic's name.
- Approved templates for confirmations and reminders.
- Patients' consent to be messaged, which a booking confirmation naturally gives for messages about that booking.
When the API is worth it
If messages wait hours for a reply, if reminders depend on someone remembering, or if two people share one phone to answer patients, the API pays for itself in no-shows avoided. Automated reminders are usually the first win.
Where an AI receptionist fits
The API is the pipe. Something still has to read each message, answer it and book the slot. Pluxo's WhatsApp receptionist does that at any hour, in the patient's language, and books into your real calendar, with your team handed anything unusual.