The Hushmail site says: "If you have your own website, you can turn any regular web form into a Hush Secure Form by making a small change to your HTML code." Looking at their API page, it appears this is accomplished by sending a POST request to the form page (https://forms.hush.com/pagename). I don't see any way to do this with Gravity Forms ... I assume this would this require an add-on, anyone know of one?