PHP mail() function is not working

Website Building
#1

The ‘mail()’ function is not working… It doesn’t send the e-mail.
Here’s the code (It is 99.9% working):

<?php $to = 'ejer.priv@wp.pl'; $subject = 'Test'; $message = 'Hello World!';

mail($to, $subject, $message);
?>

#2

Have you enabled sendmail within general settings on 000webhost.com

#3

Yes. I Have It Enabled.

#4

I use http://www.foxyform.com/