Email Verification Before Completing the Checkout
For many services it is very important to make sure the subscriber is the actual owner of the email. This will add one extra layer of security to the sign-up process. In addition, this will prevent any mistake by the client during the checkout by entering the wrong email address.
We recommend before running any final process such as payments, creating products, or hooks WHMCS sends a verification email that contains a link to continue to the checkout. WHMCS should be able to check whether this email exists on the database to skip this step.
We recommend the feature to be optional and can be activated in the General settings.