NOTE : You need your own domain like devsync.in or any other domain

To send OTP we have to use one email provider we use SMTP protocol to send email

One of the best provider is → https://postmarkapp.com/

Login with your domain mail like abhishek@devsync.in

This is Paid provider only 100 emails are free

So we will use https://resend.com/ which give us enough free mail