Just a quick update. I've check the source code of the page that holds the contact form. I understand that the "value" parameter for each dropdown option element, should be set to the e-mails address I've set in the form, using the pipe technique. However, the "value" parameter shows the words I placed before the pipe.
I've also check that the USE_PIPE constante is set to true in my Contact Form 7 installation.
Thank you!