Index: email.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/email/email.module,v
retrieving revision 1.9.2.8.4.12
diff -u -p -r1.9.2.8.4.12 email.module
--- email.module        13 Jun 2009 19:01:32 -0000      1.9.2.8.4.12
+++ email.module        17 May 2010 07:07:05 -0000
@@ -361,6 +361,9 @@ function email_mail_page_form($form_stat
  * Validate the site-wide contact page form submission.
  */
 function email_mail_page_form_validate($form, &$form_state) {
+  if (!user_access('administer site configuration') && !flood_is_allowed('email', variable_get('email_hourly_threshold', 3))) {
+    form_set_error('mail', t("You cannot send more than %number messages per hour. Please try again later.", array('%number' => variable_get('contact_hourly_threshold', 3))));
+  }
   if (!valid_email_address($form_state['values']['mail'])) {
     form_set_error('mail', t('You must enter a valid e-mail address.'));
   }