<https://www.fusedesk.com/278/why-is-an-email-address-showing-up-in-red-as-not-mailable/#article>
<http://schema.org/commentCount>
"0"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://www.fusedesk.com/278/why-is-an-email-address-showing-up-in-red-as-not-mailable/>