Is there any way to make an e-mail submission of an XML file secure/encrypted without too much user assistance? The form I'm working on will contain private data, but its users may not be the most technologically-savvy people out there, so I'd prefer this to be almost automatic, if possible.
you can get the form data via calling xfa.data.saveXML(). This will return you the xml data for the form. I think after that you should encrypt it via some custom algorithm before sending the encrypted text as part of email.