add common details to email message
function mailCommon(type, data, req, res) {
  const { zlSite } = res.locals;

  if ('form-notice' === type) {
    if (data.text) {
      data.text += `\nReferred By: ${req.cookies.referer}\n\n`+
        `-----------------------------------------------------------`+
        `\nThis message was triggered by a website user's request.\n`+
        `From IP: ${req.ip}\nFrom Url: ${req.get('Referrer')}\n\n`+
        `This message was sent from a ${process.env.ZEAL_NETWORK_NAME} powered `+
        `Website. Login to your account to view more details.`
    }
  }

  // make from name use site name (but auth email address so it will relay)
  data.from = `"${zlSite.zsName}" ${process.env.ZEAL_NETWORK_EMAIL}`;

  if (zlSite.zsInternalConfig && zlSite.zsInternalConfig.displayEmail) {
    data.replyTo = `"${zlSite.zsName}" ${zlSite.zsInternalConfig.displayEmail}`;
  }
  return data;
}