<?php
/**
* Create a custom php block
* Place the block in the rh column.
*/
 
/**
* Create a form with a single text field and submit button.
*/
function my_form() {
 
  $form['email'] = array(
    '#type' => 'textfield',
    '#title' => '',
    '#size' => '20',
  );
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => 'Subscribe',
  );
  return $form;
}
 
/**
* Validate the form.
*/
function my_form_validate($form, &$form_state) {
  $valid_email = $form_state['values']['email'];
  if (!valid_email_address($valid_email)) {
  form_set_error('email', 'Your email address -- ' . $valid_email . ' -- appears malformed');
  }
}
 
/**
* Create the hook_mail function
* Required in Drupal 6
*/
function my_form_mail($key, &$message, $params) {
 
  $headers = array(
    'MIME-Version' => '1.0',
    'Content-Type' => 'text/html; charset=UTF-8; format=flowed',
    'Content-Transfer-Encoding' => '8Bit',
    'X-Mailer' => 'Drupal'
  );
 
  foreach ($headers as $key => $value) {
    $message['headers'][$key] = $value;
  }
 
  $message['subject'] = $params['subject'];
  $message['body'] = $params['body'];
}
 
/**
* Create the form submit function
*/
function my_form_submit($form, &$form_state) {
 
    $valid_email = $form_state['values']['email'];
    $from = '[email protected]';
    $body = 'New Email Sent = ' . $valid_email;
 
    $params = array(
    'body' => $body,
    'subject' => 'This is a subject',
    );
 
    //NB First argument of the drupal_mail function must match the first part of the hook_mail function.
    //Therefore the first argument is  'my_form' and the the mail hook is 'my_form_mail'
    //For more info see:
    //http://api.drupal.org/api/function/drupal_mail/6    
    //http://api.drupal.org/api/function/hook_mail/6
 
    if (drupal_mail('my_form', 'some_mail_key', $valid_email, language_default(), $params, $from, TRUE))
    {
        drupal_set_message('An email has been sent to ' . $valid_email);     
    } else {
        drupal_set_message('There was an error sending your email');
    }
}
 
/**
* Return the form.
*/
return drupal_get_form('my_form');
?>