CF7 and WSDesk integration

Hi,
I am using CF7 to my full satisfaction. I am also using WSDesk helpdesk plugin and set it up according to wdesk blog. This works fine and the form shoot the content into wsdesk.
However, since an email address is mandatory in CF7 (to send the form to) I also receive the form in my mailbox.
Now I am looking for a solutions to only receive the form in WSDesk and not in the email.
Any suggestions?
Thanks in advance!

Arjan