We strongly recommend that you use your phone number as the second factor of authentication to secure your Cashfree account.
You can also opt for Google Authenticator to receive 2FA OTPs and you can configure this from your profile section.
Please follow the instructions here: https://docs.cashfree.com/docs/manage-account#2fa-authentication
If you are facing issues with mobile OTPs and wish to use email as an OTP channel please write to care@cashfree.com and we will be happy to assist you.
