Simple Contact Form return Email not working

I followed the instructions in your tutorial "Create a simple contact form, and email the contact information", loaded it and supporting files to host. Pulled up form and submitted it to myself. I have received no email.

what could be the error. form is loaded at form.php

Thank you in advance
~melanie

Email information including any errors are stored in the session, so you can try adding this to the bottom of the page:

<?php var_dump($_SESSION); ?>

That will have more information on any errors the page might have. It could be an error sending the email, or spam blocking preventing its delivery. Either way the error message from the above code will shed light on it. Once it has been added I can look at the page again and give more advice based on what is there.

its says
array (size=0)
empty

send a copy of the form.php page please