I have WP 3.5.1, CF7 3.3.3, WP-reCAPTCHA 3.1.6 & CF7 reCAPTCHA Extension 0.0.12
Email is sent and received when the the reCaptcha is shown and properly filled, throught the CF7 form.
But it doesn't work if the form is filled by a logged user, and the option to hide captcha for logged users is active in WP-reCAPTCHA options (Target Hide for Registered Users).
It gives this error message when trying to send (translated from spanish):
Validation error occurred. Please confirm the fields and submit the form again.
I think it's a bug of this plugin.