HOW TO USE " SUBSCRIBE VIA email" Can it be done

Problem: I need visitors that use my “Contact Form 7” when they enter their email and name on the form. I need this info SENT to my autoresponder newsletter plugin. wysija

or

Is there a Subscribe to newletter via email for wysija?
Example: wysija_ListName_orID_@mydomain.com
If anyone sends an email to this address it will opt them in to that list.

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Im using contact form 7 : http://wordpress.org/extend/plugins/contact-form-7/
Their main site: http://contactform7.com/

Its just a contact form.

I needed an autoresponder newsletter so I chose to use : http://www.wysija.com/

wysija has inform me in this support forum that I can send info from my “contact form 7” POST DATA (i guess is the term) . Send the collected data from Contact 7 from to wysija.com newsletter. http://support.wysija.com/knowledgebase/plugin-form-integrate/

I need help setting this up. Im not sure what to edit in that php code file.

http://wordpress.org/extend/plugins/wysija-newsletters/