HTML e-mail with PHP
mail( "theresa.pert@me.com", "VoH Online Enquiry",
   "Name: $name.</p>, Telephone Number: $telephone, Tour Date: $date, No in Party: $party,    Message: $message","From: $email");


<?php
$email = $_REQUEST['email'] ;
  $name  = $_REQUEST['name'] ;
  $telephone = $_REQUEST['telephone'] ;
  $date = $_REQUEST['date'] ;
  $party = $_REQUEST['party'] ;
  $message = $_REQUEST['message'] ;


if (!isset($_REQUEST['email'])) {
  header( "Location: ../contact.shtml" );
}
elseif (empty($email) || empty($message)) {
  header( "Location: ../contact-error.shtml" );
 }
   else {
   mail( "theresa.pert@me.com", "VoH Online Enquiry",
   "Name: <p>$name</p> <p>Telephone Number: $telephone</p> <p>Tour Date: $date</p> <p>No in Party: $party</p><p>Message: $message</p>","From: $email");
    header( "Location: ../contact-thankyou.shtml" );
  }
  ?>

$headers = "Reply-To: .... <mail@blabla.blabla>rn";
            $headers .= "Return-Path: .... <mail@blabla.blabla>rn";
            $headers .= "From:  .... <mail@blabla.blabla>rn";
            $headers .= "Organization: .... <mail@blabla.blabla>rn";
            $headers .= "Content-Type: text/htmlrn";
            mail($email, $object, $text, $headers);