How does the "Contact Page" work?

How does the "Contact Page" work?

The "Contact" page is administered through the "Contact" form. The web-site editor can choose destination email addresses for different categories. The "Contact page" then forwards requests to these email addresses without exposing the address to the sender. Additionally, a "CAPTCHA" ensures that the form has not been submitted by a script.
This is important for spam control. If email addresses are exposed on the web-site, robots will harvest these addresses and add them to spam lists. Adding the "CAPTCHA" will reduce form entries by automated scripts (spam).