How to get PrivateDaddy to work on pre-filled form input fields

[Dave]

Hi, I'm using PrivateDaddy and all is working perfectly, except in one situation. I'm hoping someone has a hint to point me in the right direction. 

I have a number of pages on my site with forms that users can fill out to request information. These forms have a hidden input field that contains an email address like so:

<input type="hidden" value="em...@addre.ss" readonly> 

I use these fields in the subsequent php script for processing the form to generate a message to the user (telling them to add that email address to their safe list so that replies don't end up in a junk/spam folder). In this message the email is obfuscated, which is perfect. But in the source-code on the page with the original form the email address is visible. is there something I could do about that?

Thanks for any help!

Dave