diff --git a/protected/humhub/modules/activity/Events.php b/protected/humhub/modules/activity/Events.php
index fbc6c3b779..01491a6aad 100644
--- a/protected/humhub/modules/activity/Events.php
+++ b/protected/humhub/modules/activity/Events.php
@@ -9,8 +9,8 @@
 namespace humhub\modules\activity;
 
 use Yii;
-use humhub\modules\activity\components\MailSummaryProcessor;
 use humhub\modules\activity\components\MailSummary;
+use humhub\modules\activity\jobs\SendMailSummary;
 use humhub\modules\activity\models\Activity;
 
 /**
@@ -29,9 +29,9 @@ class Events extends \yii\base\Object
     public static function onCronRun($event)
     {
         if (Yii::$app->controller->action->id == 'hourly') {
-            MailSummaryProcessor::process(MailSummary::INTERVAL_HOURY);
+            Yii::$app->queue->push(new SendMailSummary(['interval' => MailSummary::INTERVAL_HOURY]));
         } elseif (Yii::$app->controller->action->id == 'daily') {
-            MailSummaryProcessor::process(MailSummary::INTERVAL_DAILY);
+            Yii::$app->queue->push(new SendMailSummary(['interval' => MailSummary::INTERVAL_DAILY]));
         }
     }
 
diff --git a/protected/humhub/modules/activity/jobs/SendMailSummary.php b/protected/humhub/modules/activity/jobs/SendMailSummary.php
new file mode 100644
index 0000000000..2c1a7660e5
--- /dev/null
+++ b/protected/humhub/modules/activity/jobs/SendMailSummary.php
@@ -0,0 +1,43 @@
+<?php
+
+/**
+ * @link https://www.humhub.org/
+ * @copyright Copyright (c) 2017 HumHub GmbH & Co. KG
+ * @license https://www.humhub.com/licences
+ */
+
+namespace humhub\modules\activity\jobs;
+
+use Yii;
+use humhub\components\queue\ActiveJob;
+use humhub\modules\activity\components\MailSummaryProcessor;
+use humhub\modules\activity\components\MailSummary;
+
+/**
+ * SendMailSummary
+ *
+ * @since 1.2
+ * @author Luke
+ */
+class SendMailSummary extends ActiveJob
+{
+
+    /**
+     * @var int the interval
+     */
+    public $interval;
+
+    /**
+     * @inheritdoc
+     */
+    public function run()
+    {
+        if ($this->interval === MailSummary::INTERVAL_DAILY || $this->interval === MailSummary::INTERVAL_HOURY) {
+            MailSummaryProcessor::process($this->interval);
+        } else {
+            Yii::error('Invalid summary interval given'. $this->interval, 'activity.job');
+            return;
+        }
+    }
+
+}