Block Disposable Email Addresses on Registration
Rejects registrations from throwaway email services, which are a common source of fake and spam accounts.
Snippet Library
Users snippets for WordPress
Snippets for user accounts, roles and profiles: extra profile fields, new columns in the users list, last-login tracking and tighter control of what each role can do. Handy for membership sites, client sites and teams with many authors.
Limit Sign-Ups per IP Address
Allows only a few new accounts per IP address per day, which stops bots and people from creating piles of accounts.
Only Allow Registration From Certain Email Domains
Limits sign-ups to email addresses at the domains you list, for example your company or school domain.
Record and Show the Registration IP Address
Saves the IP address each new account was created from and shows it in the Users list, which helps spot bulk fake sign-ups.
Stop Users From Changing Their Email Address
Makes the email field read-only for everyone except administrators, for sites where the email is tied to a contract or a login policy.
Verify Email Addresses of New Users
Sends new members a confirmation link and blocks them from logging in until they click it, which keeps fake and mistyped email addresses out.
bbPress: Email the Admin About New Topics
Sends the site admin (or a moderator address) an email with the title, author and link whenever a new forum topic is posted.