
Can You Send Appointment Reminders on WhatsApp? Yes, But There’s a Catch
Yes, you can send appointment reminders on WhatsApp. The catch is reach, opt-in, templates, and fallback coverage. Here is when SMS is still safer.
Read full articleSet up in less than 45 seconds. Automated reminders, review requests, AI‑powered contact matching, and instant cancellation — all inside Google Calendar.
Most users send their first reminder within 2 minutes
Your average appointment
That's
walking out your door every year.
Per month
$0
Per week
$0
Wasted hours/year
0 hrs
Etisia brings them back.
SMS reminders recover up to 90% of no-shows.
Annual savings
$0
Appointments recovered
0
Hours saved
0 hrs
No credit card required · 3-day free trial · Free SMS included
See it in action
No credit card required. Free SMS included.
The most complete SMS reminder app for Google Calendar — with one-tap cancellations, automated review requests, AI-powered contact matching, and group messaging built in.
Create an appointment in Google Calendar. Your client gets SMS reminders automatically — no extra steps.
Reminders respect quiet hours and time zones. Late-night bookings get rescheduled to morning — your clients are never disturbed.
Clients cancel via a link in the SMS. The calendar event is removed and you get an email — no phone tag needed.
After appointments, clients can receive a neutral review prompt with your Google review link where enabled.
Etisia reads the event title, finds the matching contact, and gets the phone number — even if the name isn't written perfectly.
Select calendar events, pull the recipients, add extras manually. One click sends personalized SMS to everyone — with dedup and opt-out safety.
Keep Google Calendar as the main calendar your team works from. Etisia adds reminders, review requests, and one-tap cancellations without a new booking system or workflow builder.
$29/month
(tax excl)
For solo operators who want reminder coverage fast, without rebuilding how appointments get booked.
Try free for 3 days — extra SMS on us
$49/month
(tax excl)
For busy businesses that want reminders and review requests included in one Google Calendar-first flow.
From$169/month
(tax excl)
Built for larger teams with multiple Google accounts and calendars or higher reminder volume. Pricing is tailored to your calendar setup, country, and monthly reminder needs.

Actionable tips, data, and templates that help appointment-based businesses keep calendars full without adding new software.

Yes, you can send appointment reminders on WhatsApp. The catch is reach, opt-in, templates, and fallback coverage. Here is when SMS is still safer.
Read full article
A booking system can reduce messages, but it can also create awkward gaps, rushed services, and missed reminder coverage. See when SMS appointment reminders are the better first step.
Read full article
Most no-shows happen because the client forgot. Google Calendar can remind you about your own schedule, but it has no way to reach the person on the other end. Here is how to close that gap.
Read full articleNo - and that is the point.
Etisia does not try to replace the way clients book with you. They can still call, text, use WhatsApp, email, walk in, or book in person.
Etisia focuses on what happens after the appointment exists: reliable SMS reminders, client confirmations or cancellations, and an updated Google Calendar.
Because booking software often forces you to rebuild how you work before it solves the actual problem.
You create services. Set hours. Add a team. Configure rules. Build a booking page. Teach clients to use the link.
Then real life happens: clients still call, text, use WhatsApp, and book in person. Etisia works with that reality. You add the appointment to Google Calendar and the reminder runs automatically.
Basic reminders are usually just an add-on.
Etisia is built around reminders as the core product: SMS timing, calendar detection, contact handling, reminder status, cancellations, confirmations, opt-outs, and follow-up messages are part of the same reminder flow.
You do not get a booking system with reminders bolted on. You get a reminder system built specifically to help clients show up.
Etisia is designed to keep reminders as reliable and timely as possible.
The system watches upcoming reminders, checks status, flags missing phone numbers, detects opt-outs, and helps prevent silent sending failures. The demo shows this through event statuses such as SMS ready, SMS sent, no SMS, opt-out, and missed reminder windows.
The goal is simple: once the appointment is in your calendar, you do not have to wonder whether the reminder will actually go out.
Smart monitoring means Etisia does not just "send an SMS and hope."
It tracks the reminder flow around each appointment. If a phone number is missing, the client opted out, the reminder window has already passed, or something needs attention, Etisia shows it instead of hiding it in another dashboard.
That is the difference between "we send SMS" and "we help you run reminders properly."
No.
Clients receive a normal SMS. No app. No login. No client portal. No new behavior to learn.
That matters because the whole point is to avoid forcing clients into systems they may never use.
Perfect. That is exactly what Etisia is made for.
Your clients can keep booking the way they already reach you. You just add the appointment to Google Calendar, and Etisia handles the reminder from there.
It does not matter where the booking came from. The calendar event is what triggers the reminder.
Yes.
You can include confirmation and cancellation options in the reminder, so clients can respond before the appointment instead of forgetting, cancelling too late, or simply not showing up.
That gives you a better chance to protect the slot.
No.
Google Calendar stays the simple place where your appointments live. Etisia adds a reminder layer around it, so you do not have to migrate into a full booking platform or manage another scheduling dashboard.
Your team keeps the calendar workflow it already knows.
No.
Create an account, connect Google Calendar, and try Etisia on your own appointments.
Free SMS credits are included, so you can see the reminder flow before deciding.
Reduce no-shows with automated SMS reminders
Get more 5-star reviews on autopilot after every appointment
Save hours on manual scheduling & follow-ups
No credit card required. Free SMS included.