Block Spam users or block random domain from registering on wordpress
This link was very useful to do what was required. https://docs.ultimatemember.com/article/62-block-any-registration-that-does-not-use-gmail-as-mail-provider Choose the version of WordPress and implement it. As always take backup before any plugin update or any change. #wordpress, #ultimatemember, #blockotherdomainusers , #blockspamusers, #allowonlycertaindomainforemailregistration