asgjulie on "[Plugin: Contact Form 7] include logged-in user info in email"

I need to be able to send, in the email, the name and email the user logged in to my site with. It doesn't need to display but I do need it in the email, so I can verify identity.
I know I can set that info as the default with this:
Your Name: [text* your-name default:user_display_name]
Your E-mail: [email* your-email default:user_email]
but I don't really want them to be able to edit that information. (I've got other fields where they can enter better/other contact info.)
I found this:
http://wordpress.org/support/topic/contact-form-7-automatically-send-with-username-and-email?replies=11
but it's a few years old.
Anyone know how to do this, maybe more easily or, best, automatically?
Thanks.

http://wordpress.org/plugins/contact-form-7/