Test email

<?php 
//if "email" variable is filled out, send email   
if (isset($_REQUEST['email']))  {      
    //Email information   
    $admin_email = "someone@example.com";   
    $email = $_REQUEST['email'];   
    $subject = $_REQUEST['subject'];   $comment = $_REQUEST['comment'];      
    //send email   
    mail($admin_email, "$subject", $comment, "From:" . $email);      
    //Email response  
    echo "Thank you for contacting us!";   
    }      
    //if "email" variable is not filled out, display the form   
    else  { 
?>   
    <form method="post">
    Email: <input name="email" type="text" />
    Subject: <input name="subject" type="text" />
    Message:
    <textarea name="comment" rows="15" cols="40"></textarea>
    <input type="submit" value="Submit" />   
    </form>
<?php } ?>