Assign a Role Based on the Email Domain
Gives people who register with certain email domains a different role automatically, for example staff at your company become Contributors.
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.
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.