Create a Phone-only Event Type
In Cal ID, switch an event to phone-first so guests confirm with a phone number and get details by SMS — ideal for SMS-based workflows.
- Open Event Types and click Edit on the event.
- Go to the Booking questions section.
- Under the Confirmation header, on the right you'll see an Email / Phone toggle.

- Click Phone — this makes the Phone Number question required.
- Click Save.
The Phone Number field becomes mandatory, with a country-code selector for international numbers.

With Phone selected, meeting details are sent by SMS instead of email — great for clients who check texts more than their inbox.
Updated on: 04/08/2026
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