As an admin, you can automatically approve new users with authorized email addresses and restrict new users without authorized email addresses from joining your account.
Enter domain addresses to automatically approve new users with email address that match the domain on the Advanced Settings > Features and Options page of the admin console. Users attempting to join your account with an email address that does not match the domain receive an error.
- From the admin console, navigate to Advanced Settings > Features and Options.
- In the Restrict new users to these domains field, enter the domains you want to allow.
- Click Enter to add another domain.
- Click Update.