diff --git a/library/CM/RenderAdapter/Mail.php b/library/CM/RenderAdapter/Mail.php
index 026c2e006..8395d16ff 100644
--- a/library/CM/RenderAdapter/Mail.php
+++ b/library/CM/RenderAdapter/Mail.php
@@ -27,9 +27,7 @@ public function fetch() {
             $html = $htmlBody;
         }
         if ($mail->getRecipient()) {
-            $imageTag = '<img style="display: none; width: 0px; height: 0px;" src="' .
-                CM_Util::htmlspecialchars($this->getRender()->getUrlEmailTracking($mail)) . '" />';
-            $html = preg_replace('#</body>#', $imageTag . '$0', $html);
+            $html = preg_replace('#</body>#', $this->_getTrackingImageTag($mail) . '$0', $html);
         }
 
         if (!($text = $mail->getText())) {
@@ -56,6 +54,15 @@ public function fetch() {
         return array($subject, $html, $text);
     }
 
+    /**
+     * @param CM_Mail $mail
+     * @return string
+     */
+    protected function _getTrackingImageTag(CM_Mail $mail) {
+        return '<img style="display: none; width: 0px; height: 0px;" src="' .
+        CM_Util::htmlspecialchars($this->getRender()->getUrlEmailTracking($mail)) . '" />';
+    }
+
     /**
      * @param string $tplName
      * @throws CM_Exception_Invalid