Verifies that the supplied email address is not from any of the domains included in the specified application setting. To configure this validation, click Setting Name and then select the name of the API client setting that contains the prohibited domains (Registration Builder lets you select from all the custom API client settings configured in your application):
Note that, when constructing your collection of disallowed email domains, you can use wildcard characters to specify a blacklisted domain. For example, the syntax *.bad-domain.com will prohibit email addresses from bad-domain.com, users.bad-domain.com, employees.bad-domain.com, and so on.
The Blacklisted Email Domains validation can be used with the following field types: