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Require guests to confirm a verification code before their booking is finalized, so every appointment is tied to a real, reachable email address. In Cal ID, the Requires booker email verification feature adds an essential layer of security and data integrity to your scheduling process. It ensures that every booking is tied to a legitimate, accessible email address by requiring guests to enter a verification code before their appointment is confirmed.
Email verification is one of the most effective ways to reduce spam and fake bookings — it blocks bots and bad actors who use non-existent addresses before they ever reach your calendar.

Why use “Requires booker email verification”?

  • Eliminate Spam & Fake Bookings: It prevents bots or malicious users from filling your calendar with fake appointments using non-existent email addresses.
  • Ensure Deliverability: By verifying the email upfront, you can be 100% certain that confirmation links, meeting invites, and automated reminders will actually reach the guest.
  • Protect Sensitive Meetings: For high-value consultations or private sessions, this ensures that the person booking is exactly who they claim to be.
  • Reduce No-Shows: Requiring an extra step of verification often filters out casual or “low-intent” bookers, ensuring your time is spent with committed clients.

How to set it up

1

Log in to Cal ID

Log in to your Cal ID account.
2

Select your event

Go to the Event Types tab in the left sidebar and select the specific event you wish to modify.
3

Navigate to Advanced

Click on the Advanced tab in the top navigation bar.
4

Toggle the Setting

Scroll down to find the option Requires booker email verification.
5

Enable

Switch the toggle to ON.
6

Save

Click the blue Save button at the top right to finalize the change.
Enabling the Requires booker email verification toggle in the Advanced tab

How it works for the booker

  • The Verification Step: After the guest fills out their name and answers your booking questions, they won’t see the “Confirmed” screen immediately. Instead, they will see a prompt to enter a 6-digit verification code.
  • The Email Trigger: Cal ID instantly sends an automated email to the address provided by the guest containing the unique code.
  • The Confirmation: Once the guest enters the correct code on the booking page, the meeting is officially confirmed and added to both of your calendars.
  • Time Sensitivity: If the guest fails to enter the code within a certain timeframe, the slot remains open for others to book, protecting your availability.
While this feature significantly increases security, it does add a small amount of “friction” to the booking process. We recommend using this for high-value or public-facing links where spam is a concern. For known clients or internal team meetings, you may prefer to keep it disabled for a faster booking experience.