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In Armenia and across most of the CIS, WhatsApp is read and an unknown phone number is not answered. That makes it the most reliable channel a clinic has — and the easiest one to misuse.
Two things decide whether it works: what you send, and what you never send.
The line you should not cross
WhatsApp is a consumer messenger. Treat everything you send through it as potentially readable by someone other than the patient — a shared phone, a notification on a lock screen, a family member holding the device.
Safe to send: appointment date and time, address, clinic name, dentist's first name, cost of a scheduled visit, general reminders.
Do not send: diagnoses, radiographs, clinical photographs, treatment plans containing clinical detail, test results, anything about a third party.
For anything clinical, send a message asking the patient to call or come in. "Your results are ready, please call us" carries no information a stranger could misuse.
Timing rules
- Nothing before 09:00 or after 20:00. A clinic that messages at 22:00 is remembered for that, not for the reminder.
- One reminder per appointment. Two is thorough; three is spam and gets you blocked.
- Reply during working hours only, and say so in the first message you ever send a patient.
Templates
Keep them short. A message that needs scrolling gets read as an advertisement.
Booking confirmation — sent immediately:
Hello {name}. Your appointment at {clinic} is confirmed for {date} at {time}, with Dr. {dentist}. Address: {address}. To change it, reply to this message.
24-hour reminder:
Hello {name}, a reminder of your appointment tomorrow at {time} at {clinic}. If you cannot come, reply here and we will find another time.
After a missed appointment — sent the same day, without reproach:
Hello {name}, we missed you today. Would you like us to find you another time?
Tone matters here. A patient who feels judged does not rebook.
Recall, 6 months:
Hello {name}, it has been six months since your last check-up at {clinic}. Would you like to book? Reply with a convenient day.
Post-treatment, day after:
Hello {name}, how are you feeling after yesterday's treatment? If anything worries you, reply here or call {phone}.
That last one takes seconds and does more for retention than any marketing spend.
Make replies actually work
A reminder nobody can reply to is half a reminder. If a patient answers "I can't come Thursday" and nobody reads it, you have taught them that replying is pointless — and lost the slot anyway.
Whoever handles the clinic phone should handle WhatsApp, and the messages should land where the appointment lives, not in a personal account on someone's phone.
Do not use a personal number
A staff member's personal WhatsApp is a problem the day they leave: the clinic loses the entire message history, and patients keep messaging a number that no longer reaches you.
Use a clinic number, and make sure more than one person can access it.
Consent and opt-out
Ask once, at registration: "May we send appointment reminders on WhatsApp?" Record the answer.
Include an opt-out in recall and marketing messages — not in appointment reminders, which are service messages the patient asked for by booking.
Measure it
Track no-show rate before and after introducing reminders. If it does not move within two months, the problem is not reminders — it is booking too far ahead, or reminders that cannot be replied to.
In DOQ, WhatsApp reminders send automatically in the patient's language, and replies arrive against the appointment rather than in someone's personal chat.