Hi all, just fyi...
There's minor typo mistake in the "try_catch" prog. code :

//if no errors thank the user
 if (!is_object($e) and isset($_POST['posted'])) {

echo "Thanks for your entry. We'll be in touch.";
} else {

//return the filled out form to the user and ask them to try again

Note : it should be ($_POST['posted']) instead of ($posted) as above.

Have a nice day,
Iris