Smart OTP offers the solutions to verify email and phone number easily, free of charge. That means your lead data will be more accurate with email verification & phone validation methods.

Demo
https://codecanyon.net/item/smart-otp-phone-validator-and-email-verification/23262583

Download
https://www.filecad.com/ik5m/Smart-OTP-v1.2.0---Phone-Validator-and-Email-Verification.rar