Get a quick attendee choice after a Cal booking
Make the next step easy to answer. Send a short WhatsApp button prompt tied to a Cal booking event.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Send interactive buttons
Send an interactive button message to a whatsapp number. button messages allow users to quickly respond by tapping up to 3 predefined buttons. perfect for yes/no questions, quick choices, or call-to-action scenarios. note: the message will be delivered to the recipient only if they have texted first.
Why this helps
Open-ended follow-up messages can create extra back-and-forth when a simple choice would do.
- Offer up to three clear response choices.
- Reduce typing for attendees who need to confirm a preference.
- Use the booking context provided to Notis to make the prompt relevant.
Setup
Build it in a few focused steps.
- 1Connect Cal and WhatsApp once in the Notis portal.
- 2Create an automation in Automations, New Automation, or tell Notis to create it from any channel.
- 3In one instruction, ask Notis to send the attendee a brief WhatsApp button prompt with up to three choices based on the booking context.
- 4Pick the Notis webhook trigger and choose where run reports should go.
- 5Test with one real booking example and check the available choices.
Questions about this workflow
What starts the automation?
A Notis webhook starts it. Include the booking context and recipient details in the request because Cal has no listed trigger events.
How many buttons can the message contain?
The Send interactive buttons action supports up to three predefined buttons.
Will the button message reach anyone?
It is delivered only if the recipient has texted the WhatsApp number first.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Cal to Whatsapp. A trigger fires from one place; an action lands in another.
Cal triggers
Whatsapp actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Create message template
Create a new message template for the whatsapp business account. templates must be approved by whatsapp before they can be used. templates are required for marketing messages and messages sent outside the 24-hour window.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Delete message template
Delete a message template from the whatsapp business account. this permanently removes the template and it cannot be recovered. only delete templates that are no longer needed.
Get business profile
Get the business profile information for a whatsapp business phone number. this includes business details like description, address, website, and contact info.
Get media
Get information about uploaded media including a temporary download url. the download url is valid for 5 minutes and can be used to retrieve the actual media file. this is useful for downloading media that was sent to your whatsapp number.
Get media info
Get metadata about uploaded media without generating a download url. this is useful for checking file size, type, and hash without downloading the file. use get media if you need the actual download url.
Get message templates
Get all message templates for the whatsapp business account. templates are required for sending messages outside the 24-hour window and for marketing/utility messages.
Get phone number
Get details of a specific phone number associated with a whatsapp business account.
Get phone numbers
Get all phone numbers associated with a whatsapp business account (waba).
Connect any two apps with Notis in the middle.
Cal and Whatsapp, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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