diff --git a/data/class/SC_SendMail.php b/data/class/SC_SendMail.php
index 903d71d837..17851d5589 100644
--- a/data/class/SC_SendMail.php
+++ b/data/class/SC_SendMail.php
@@ -357,6 +357,11 @@ public function getBackendParams($backend)
         switch ($backend) {
             case 'mail':
                 $arrParams = array();
+                $objDb = new SC_Helper_DB_Ex();
+                $objSite = $objDb->sfGetBasisData();
+                if (!empty($objSite['email04']) && strpos($objSite['email04'], '@') > 0) {
+                    $arrParams[] = "-f ".$objSite['email04'];
+                }
                 break;
 
             case 'sendmail':
diff --git a/tests/class/SC_SendMailTest.php b/tests/class/SC_SendMailTest.php
index ea13dc3960..850359d8c3 100644
--- a/tests/class/SC_SendMailTest.php
+++ b/tests/class/SC_SendMailTest.php
@@ -142,9 +142,18 @@ public function testGetRecip()
         $this->verify();
     }
 
+    /**
+     * @runInSeparateProcess
+     * @preserveGlobalState disabled
+     */
     public function testGetBackendParams()
     {
-        $this->expected = [];
+        $this->objQuery->update('dtb_baseinfo', ['email04' => 'test@example.com']);
+        $objDb = new SC_Helper_DB_Ex();
+        $objSite = $objDb->sfGetBasisData();
+        $this->expected = [
+            '-f '.$objSite['email04']
+        ];
         $this->actual = $this->objSendMail->getBackendParams('mail');
         $this->verify();