Using the Ultimate Email Validator Plugin
Spam site registrations or spam form submissions can be blocked by being able to detect and block emails from being used on your child site. There is a new plugin called Ultimate Email Validator. After the plugin has been installed and activated on the site it will add a new admin menu called; Ultimate Email Validator The plugin includes support for the following popular plugins BuddyPress, WooCommerce, MailChimp, Contact Form 7, Gravity Forms and Ninja Forms. As well as support for default WordPress Forms. Ultimate Email Validator uses the SOLYD free API Block Temporary Email to detect and stop the