php Form Help?

Hi, all. I'm trying to do my first form and am having trouble getting any of the fields to show up in the email. What I get is an email with from: "email address" subject="Website Form Request" and that's it, nothing in the content field at all. Here's what I have:

HTML:
<form method="post" action="sendmail.php">
First Name:
<input name="firstname" type="text"><br>
Last Name:
<input name="lastname" type="text"><br>
Company: <input
name="company" type="text"><BR>
Email: <input name="email"
type="text"><br> Phone:
<input name="phone" type="text"><br>
Address 1:
<input name="address1" type="text"><br>
Address 2:
<input name="address2" type="text"><br>
City: <input
name="city" type="text"><br>
State: <input name="state"
type="text"><br> Zip
Code: <input name="zipcode"
type="text"><br> Comments:
<br> <textarea
name="message" rows="15" cols="40">
</textarea><br>
<input type="submit"> </form>

php:
<?php $firstname
= $_REQUEST['firstname'];
$lastname = $_REQUEST['lastname'];
$company =
$_REQUEST['company']; $email
= $_REQUEST['email'] ;
$phone =
$_REQUEST['phone']; $address1
= $_REQUEST['address1'];
$address2 = $_REQUEST['address2'];
$city =
$_REQUEST['city']; $state
= $_REQUEST['state'];
$zipcode = $_REQUEST['zipcode'];
$comments =
$_REQUEST['comments']; mail(
"taniahharrison@gmail.com", "Website Form
Request",
$message, "From:
$email" );
header( "Location: thankyou.php"
); ?>

[EDIT: Fixed. Thanks!]