code: function sendSmartEmail(details, callback) {
          createsend.post('transactional/smartemail/'+details.smartEmailID+'/send', null, details, function(error, results) {
              txResponseCallback(error, results, callback);
          }, true);
      }
docs: Deliver a smart email. Properties in the data property will be available in your email as variables which can be referenced using our Template Language.