You can sign up to get notifications for an entire domain, meaning that you can get notifications for any email with the "example.fastmail.fm" domain. See here

You can sign up to get notifications for an entire domain, meaning that you can get notifications for any email with the "example.fastmail.fm" domain. See here: https://haveibeenpwned.com/DomainSearch https://haveibeenpwned.com/DomainSearch