Protect WordPress From Spam User Registrations With CM Email Blacklist – Free WordPress Plugin Guide
Avoid spam, virus, malware, disposable emails and unwanted users! The WordPress email blacklist plugin allows you to block users who try to register from suspicious domains.
Free Version: https://wordpress.org/plugins/cm-email-blacklist/
Pro Version:
https://www.cminds.com/wordpress-plugins-library/email-registration-blacklist-plugin-for-wordpress/
Check our 100+ quality WordPress plugins:
https://www.cminds.com/wordpress-plugins/