WHMCS recommends several options to help you stop spam orders, and includes support for reCAPTCHA, banning email domains, and more.
Email verification ensures that a client's registered email address is valid after client creation or changes to the email address.
WHMCS allows you to ban specific email domains from creating new client accounts and users. You may wish to ban free email providers.
Validation.com discontinued their services on April 9, 2023. As a result, WHMCS features that relate to Validation.com no longer function.
Spam control filters in WHMCS reduce the amount of spam that you receive in your ticket system by blocking emails, keywords, and phrases.