Set up DOI via OTP
As well as using DOI via email confirmation, you can also use DOI via one-time password (OTP) codes.
- Go to Publish and click on Double opt-in (GDPR).

- Enable Double opt-in via OTP code (email) or click on EDIT if you already enabled it.

- Select the email field for Email recipient if not already there automatically, make any other changes to the setup, and click on SAVE & CLOSE.

- Your audience will then receive an email containing an OTP code which they have to enter into the Q they are taking part in.

Please note:
You cannot have the OTP verification and DOI email active at the same time.
Unconfirmed leads: With OTP, only leads who enter the code are saved. The option Save DOI-unconfirmed leads is not available for OTP. If you need unconfirmed leads too, e.g. for a raffle, use the double opt-in confirmation email instead. Unconfirmed leads you saved with OTP in the past stay in your leads and exports.
If you have your Q connected to a leaderboard and enable the OTP verification, your audience will be sent one code that combines the functionality for entering a leaderboard and email verification.