You can host your own endpoint if you don't want to use a third party. Create a php file on your own server and use the path as your Marketo webhook url. Your payload template would be datetime={{lead.field with systemdateTime}} and response mapping JSON If you don't need timezone translation <?php $dt = new DateTime($_POST["datetime"]); $response = '{"response":"'.date_format($dt,"m/Y").'"}'; echo $response; ?> If you need timezone translation (I think Marketo stores system date time as CST): <?php $dt = new DateTime($_POST["datetime"], new DateTimeZone('America/Chicago')); $dt->setTimezone(new DateTimeZone('Australia/Sydney')); $response = '{"response":"'.date_format($dt,"m/Y").'"}'; echo $response; ?> Map 'response' to your new field in the webhook response mappings. Please google for documentation on php timezones and date formatting
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