Skip to main content
Switch a Cal ID event to a phone-first scheduling workflow by making a phone number — not email — the primary contact your booker must provide. It’s ideal for SMS-based confirmations and reminders.
Selecting Phone in the Confirmation section makes the Phone Number field required and sets phone as the primary identifier for the booking.

How to switch to phone confirmation

1

Edit your event type

Go to Event Types and open the event you want to change.
2

Open Booking questions

Go to the Booking questions section, which controls the information asked on the booking page.
3

Locate the Confirmation header

Find the Confirmation header, which defines what your booker must provide to receive confirmations.
4

Find the Email/Phone toggle

On the right-hand side of this section, you’ll see a toggle with Email and Phone icons.
5

Click the Phone button

This selects the phone number as the primary identifier for the booking.
6

Confirm the required field

Once selected, the Phone Number question is set to a Required field.
7

Save

Click Save at the top right.

What happens on your booking page?

  • Primary requirement: The Phone Number field becomes the mandatory input for bookers to complete their booking.
  • Automatic formatting: The phone field includes a country code selector to ensure international numbers are captured correctly.
Booking page for a phone event with a required Phone Number field and a country-code dropdown beside it

Collecting a number instead of an email

Confirmation delivery: Selecting the Phone option means meeting details are sent via SMS rather than a traditional email. This is perfect for high-touch services where clients are more likely to check their text messages than their inbox.

Other booking field setups

Add pre-booking questions

Collect exactly the information you need before someone books.

Split full name

Capture first and last name as separate fields.

Verify booker email

Require a verification code before a booking is confirmed.

Require or exclude email domains

Control who can book with domain validation rules.