Appointment Reminders That Cut No-Shows (Twilio and Zapier)

Part of our Small Business Automation guide: what to automate first and the 10 easiest wins.

The problem

No-shows cost you the slot and the income. Automatic reminders by SMS or email before each appointment cut no-shows noticeably, and give clients an easy way to reschedule.

What you need

A booking tool such as Calendly or Google Calendar
Zapier or Make
Twilio for SMS, or Gmail for email

Setup with Zapier

If you use Calendly, turn on its built-in reminder emails under Workflows first, because they may be all you need.
For SMS, create a Zap with the trigger Google Calendar, Event Start set to 24 hours before.
Add Twilio, Send SMS to the client’s phone number (store it in the event description or a form field).
Duplicate the Zap for a 2-hour reminder.
Test it with an appointment booked for yourself.

Setup with Make

Use Google Calendar, Watch Events with a ‘starting in’ window.
Add Twilio, Create a Message.
Schedule it to run every 15 minutes.

Twilio SMS reminder message template

Hi [Name], a reminder of your appointment with [Business] at [time] tomorrow. Need to change it? Reply or use [reschedule link].

Appointment reminders for an existing booking are service messages, not marketing. Keep them free of promotions. Check SMS rules in your country (TCPA, Spam Act, PECR, CASL). This isn’t legal advice.

FAQ

When should appointment reminders go out?

A common setup is one reminder 24 hours before and a second one 2 hours before. The first gives people time to reschedule, and the second catches anyone who forgot. Adjust the timing to suit how far ahead your clients usually book.

Can clients confirm or reschedule by replying?

Yes. Send replies to your inbox or phone so someone can act on them. You can also add a Zap that marks the event as confirmed when a client replies, or include a reschedule link in the message.

Should I send reminders by text or email?

Text is good for short, time-sensitive nudges because people tend to see it quickly. Email suits longer details like directions or what to bring. Many businesses send an email when the booking is made and a text closer to the time.

Do appointment reminders need an opt-out?

Reminders about a booking the client made are service messages, not marketing, so keep them free of promotions. Collect the phone number with a note that you’ll text about the booking. Check the SMS rules in your country, because they differ.

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One-page checklist: Appointment reminders to cut no-shows

☐ If you use Calendly, turn on its built-in reminder emails under Workflows first, because they may be all you need.

☐ For SMS, create a Zap with the trigger Google Calendar, Event Start set to 24 hours before.

☐ Add Twilio, Send SMS to the client's phone number (store it in the event description or a form field).

☐ Duplicate the Zap for a 2-hour reminder.

☐ Test it with an appointment booked for yourself.

Consent note: only message people who have contacted you or agreed to hear from you, and include a way to opt out. This isn't legal advice.

Full guide: https://www.automatequick.com/guides/appointment-reminders-no-shows

Which should I choose?

Free guide

Build it yourself

About 30 to 60 minutes
Some tech skill needed: you add and connect each step yourself
Step-by-step instructions for Zapier, Make or n8n
Costs nothing from us

Use the free guide →

Ready-made pack · US$19

Import it and you're done

Done in about 10 to 20 minutes for most setups
Messages already written
START HERE PDF with every click explained
Made for owners with zero tech skills

Get the ready-made pack →

Get the pack and follow the step-by-step guide.

See what you get

Either way, you'll still need your own Zapier, Make or n8n account, plus any tools it connects to (like Twilio for texts, which charges usage fees).

Get it ready-made or set it up yourself

Appointment reminders template pack: Make blueprints (bookings + sender), n8n workflow, Zapier read-me and a setup guide PDF with the ready-written text and email reminders (day before, 2 hours before, missed appointment).US$19 + tax where applicable

Skip the build. Import it, connect your accounts, done in about 10 to 20 minutes for most setups. Messages already written. See what you get

Set it up myself · free guide

You'll still need your own Zapier, Make or n8n account, plus Twilio for texts (usage fees apply).

Includes a step-by-step guide.

Faulty or not as described? We'll fix it or refund you.