Hi,
currently this can't be achieved with our current tools/plugins, but we currently working on a new background system and some new plugins which will provide this functionality.
In the near future we will provide a PDF Formular Mailer which can transform a filled out HTML formular to PDF. This created PDF can be send to an email address or can be downloaded directly.
The development process will still take 4 weeks, then the new things should be available.