HTML: Template placeholders or recipient email in element class attributes

type.inbound
and (
  // observed unpopulated template variables in class names
  any(html.xpath(body.html, "//*/@class").nodes,
      regex.icontains(.raw,
                      '\{\s*(?:domain|email|(?:RECIPIENT|SENDER)[_\s]?EMAIL)\s*\}'
      )
  )

  // check where class names _are_ the email address, or contain the email address are wrapped in { } or start/end with { or }
  or any(recipients.to,
         .email.email != ""
         and any(html.xpath(body.html, "//*/@class").nodes,
                 .raw =~ ..email.email
                 or .raw =~ strings.concat("{", ..email.email, "}")
                 or .raw =~ strings.concat("{", ..email.email)
                 or .raw =~ strings.concat(..email.email, "}")
         )
  )
)