Many questions have been asked on how to redirect to a Thank-You page after submitting a contact-us form from the contact component. The current implementation of the Thank you message above the submitted form is a jerk and not very profesional. Here is how to solve this.

• Make a Thank-You page in Static Content. Choose whatever content or title you want to use.
• Create a menu-item (Static-Content) and point it to your Thank-You page or whatever title you have given it. The reason for this is that we want to findout the exact URL of the link to your static content "thank-you" page
• Imagine that your link has got the id's something like  http://www.yoursite.com/index.php?option=com_content&task=view&id=15&Itemid=44. This means we now know what the URL is so we can modify some little piece of code...It is only very little!
• Open with a good editor such as Dreamweaver or equivalent the contact.php file, located in components/com_contact

now find on or around line 462 - 464 (in my version) this code:

$link = 'index.php?option=com_contact&task=view&contact_id='. $contact[0]->id .'&Itemid='. $Itemid;

      mosRedirect( $link, _THANK_MESSAGE )

replace that code with the URL for the contact Thank-you page as defined as follows:

mosRedirect( 'http://www.yoursite.com/index.php?option=com_content&task=view&id=15&Itemid=44' )

If you have SEF enabled and have some nice URL's defined or have something like (example) http://www.yoursite.com/content/view/15/44/ than put that SEF-based URL into the code...

Solution by http://joomadesk.com