CB Public Mail as contact form with captcha

joomla 1.7.1, cb 1.7 gj2.4, cb public mail (directories)

Hi,
I was trying for something like cb contact (a public contact form with captcha).
I want this only for publicly contacting some registered persons (moderators).
I don't want these public guests can see the profiles. So I tried with substitutions and content bot. It worked, but after sending the mail, i was redirected to the profile.

Is there a possibility to not be redirected to the profile?

CB email form and feature is only functional for logged in users. It does not allow public users to send emails unless you've somehow edited the core to ignore this, which if is the case just continue to edit it further and remove or change the redirect to something else. You can disable public profiles by changing profile access permissions within CB > Configuration > User Profile.