Restrict the email addresses people can use when registering for your event. For example, allow your company’s email domain or reject a domain used for unwanted signups.
Go to Event Settings > Event Experience > Registration & Checkout and find Registration Restrictions.
In Only Allow Emails That Include, enter the allowed rules, one per line. Use lowercase, for example @company.com. A full email address or domain suffix is also accepted.
Use Reject Emails That Include for rules you want to reject. You can use either list or both. If both match an address, the reject rule wins.
Enter the explanation attendees should see in Message to Show When Email Address Isn’t Allowed. This is required when either list is used.
Select Save at the top of the page.
How the rules match
Despite the field labels, rules match the end of an email address. Include the leading @ when you mean a specific domain. These checks screen the supplied address; they do not verify a person’s identity or employer. For common personal email providers, you can also use Business Emails Only?.
Attendees who already registered
Changing these signup rules does not revoke an existing attendee’s login or purchased access. If you need to remove an attendee, follow Delete attendee records. Blocking the address also helps prevent a later signup with the same suffix.