<?php
class EmailFriendPage extends Page {
static $db = array();
static $has_one = array();

static $icon = 'themes/xxxxx/images/treeicons/email';
}

class EmailFriendPage_Controller extends Page_Controller {

protected $_senderEmail = 'noreply@xxxxxxx.org.uk';

/**
* Creates the Email a friend form
*
* @return Form
*/
public function EmailFriendForm() {

$record = $this->ItemOfInterest();

switch ($record->ClassName) {
case 'GuidePage':
$link = 'guides';
break;
case 'StoryPage':
$link = 'success-stories';
break;
}

$link = Director::absoluteBaseURL() . $link;

$fields = new FieldSet(
new TextField('sender_name', 'Your name *'),
new EmailField('email', 'Your friend\'s email *'),
new HiddenField('item_of_interest_title', '', $record->Title),
new HiddenField('email_link', '', $link)
);

$actions = new FieldSet(new FormAction("SendEmail", "Send Email"));

$validator = new RequiredFields('sender_name', 'email');

return new Form($this, "EmailFriendForm", $fields, $actions, $validator);
}

/**
* Returns the record of the type chosen by the user for emailing to a friend
*
* @return DataObject
*/
public function ItemOfInterest() {

if (!isset($_GET['type']) or !isset($_GET['id'])) {
Director::redirect(Director::baseURL(). $this->URLSegment . '/');
}

$type = $_GET['type'];
$id = $_GET['id'];
$id = (int)$id;

switch ($type) {
case 'guide':
$record = DataObject::get_by_id('GuidePage', $id);
break;

case 'story':
$record = DataObject::get_by_id('StoryPage', $id);
break;

default:
Director::redirect('page-not-found/');
}

return $record;
}

/**
* Sends the email
*
* @param array $data
* @param Form $form
*/
public function SendEmail($data) {

$status = '';

try {
$from = $this->_senderEmail;
$to = $data['email'];
$subject = $data['sender_name'] . ' has sent you a link to the xxxxxxx website';
$body = $data['sender_name'] . ' thinks that you may be interested in the following link: ' . $data['email_link'];

$email = new Email($from, $to, $subject, $body);
$email->send();

$status = 'success';
} catch (Exception $e) {
$status = 'error';
}

Director::redirect(Director::baseURL(). $this->URLSegment . '/?success=' . $status);

}

}

<form id="Form_EmailFriendForm" action="/cms/email-a-friend/EmailFriendForm" method="post" enctype="application/x-www-form-urlencoded">