If you are fighting spam signups on your site, you might be in the process of deleting users and then finding they re-register at a later date with the same email address. WordPress does not stop this, but with the Security addon for WP User Manager, you can block any email address from a user you have deleted from the site.
Naviagte to Users > Settings > Security and turn on the ‘Block Deleted Users’ setting.
This means any users deleted from the site by the site admin, will have their email address added to the block list so they can’t re-register.
Get Started with the Best WordPress Membership Plugin Today
Connect, Manage and Build your Membership Site