Email verification via OTP in NeetoForm confirms that respondents own the email address they enter. A one-time passcode is sent to that address, and the respondent enters it to verify, so random or mistyped emails do not end up in your submissions.
This is useful for sign-up forms, event registrations, job applications, and lead capture forms where you plan to follow up by email and need the address to be real. To prevent abuse, verification codes can be sent up to three times in an hour. After the third code, the respondent needs to wait an hour before requesting another OTP.