merged 220 into tag

@@ -187,7 +187,7 @@ function remove_notice($notification_id = -1) {
  Send Notifications
  @trigger   = notification unique slug name
 */
-function send_triggered_notification($uid,$trigger="NO_TRIGGER",$args = array(),$send_override = false) {
+function send_triggered_notification($uid = 0,$trigger="NO_TRIGGER",$args = array(),$send_override = false) {
     global $wpdb;
     $notification = get_notification_by_trigger($trigger);
 
@@ -231,19 +231,25 @@ function send_triggered_notification($uid,$trigger="NO_TRIGGER",$args = array(),
         // if is_email ===========================================
         if ($notification->is_email) {
             
-            $user = new User\Account($uid);
-            
-            $email_address_preference = get_user_meta($user->ID, 'email_address_preference', true);
-            if (empty($email_address_preference)) {
-                $to_email = $user->user_email;
+            if ($uid == 0 && !isset($args['email'])) {
+                return;
+            } elseif ( $uid == 0 && isset($args['email']) ) {
+                $to_email = $args['email'];
             } else {
-                
-                $pp = strtolower($email_address_preference)."_";
-                $to_email = get_user_meta($user->ID, $pp.'email', true);
-                
-                if (empty($to_email)) {
+
+                $user = new User\Account($uid);
+                $email_address_preference = get_user_meta($user->ID, 'email_address_preference', true);
+                if (empty($email_address_preference)) {
                     $to_email = $user->user_email;
-                }   
+                } else {
+                    
+                    $pp = strtolower($email_address_preference)."_";
+                    $to_email = get_user_meta($user->ID, $pp.'email', true);
+                    
+                    if (empty($to_email)) {
+                        $to_email = $user->user_email;
+                    }   
+                }
             }
         
             $contents           = $email;