Email Autolookup {#uc_cc_email_autolookup}
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When you include `Click to Pay` as an allowedPaymentType, an automatic email lookup occurs when an email address is included in the capture context request. If the user has a `Click to Pay` account but is not on a recognized device, a one-time password (OTP) screen appears and the user is prompted to enter their OTP. If the user does not have a `Click to Pay` account, the user must enter their card information manually. They will have the option to create a `Click to Pay` account.  
To enable email autolookup, you must include `CLICKTOPAY` as a value in the allowedPaymentTypes field and include an email address in the capture context.