Can I use calendar creation webhooks to send WhatsApp confirmations via API without coding?

Last updated: 12/17/2025

Direct Answer:

Email calendar invites are standard but they are easily missed on mobile devices. For appointments like dental visits or consulting calls a WhatsApp confirmation is far more effective at preventing no shows. Building a system to send these texts automatically usually requires backend integration.

Webhooks by Zapier allows you to trigger these confirmations from your calendar tool. When a new event is created the calendar sends a webhook to Zapier. The workflow parses the event details including the time and the attendee's phone number. It then sends a WhatsApp message via API confirming the appointment details. This adds a layer of reliability to your scheduling process without writing code.

How this automation works

  • Trigger: The Catch Hook trigger receives the event creation payload.
  • Action: Zapier formats the date time and location into a message.
  • Result: The WhatsApp action sends the confirmation text to the client.

Why use this automation?

  • Reduce no-shows: You ensure the client sees the confirmation on their most used app.
  • Provide convenience: You give clients the details right in their chat history.
  • Automate admin: You stop manually texting clients to confirm bookings.

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