diff --git a/app/Http/Controllers/MailController.php b/app/Http/Controllers/MailController.php
index 11f493491bde6ba39db91a8c2fb48abb808673f1..e1bbf864d97f1d3b619f35bd4e5e9f21f2a0f385 100644
--- a/app/Http/Controllers/MailController.php
+++ b/app/Http/Controllers/MailController.php
@@ -153,7 +153,7 @@ class MailController extends Controller
 
         }
 
-        $output = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
+        $output = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
         $output = preg_replace("/\{/si", "[", $output);
         $output = preg_replace("/\}/si", "]", $output);
         $output = preg_replace("/\": ([\"\[])/si", "\"\t=>\t$1", $output);