The ssession output indicates that the email was sent:
"Sending To: firstname.lastname@example.org... Success
if you are not receiving the email, double check with your host to look in the SMTP error logs to determine why it is not being received.
for the labels in the emails, see this tutorial:
as for validation, edit the server validation behavior to change which elements are required by the server, and edit the form elements themselves top remove the required attribute for jquery validation.