diff --git a/flarum/bootstrap.php b/flarum/bootstrap.php
index 043fe65..6f98dd6 100644
--- a/flarum/bootstrap.php
+++ b/flarum/bootstrap.php
@@ -28,6 +28,9 @@ $app->instance('config', $config = new \Illuminate\Config\Repository([
         ],
         'compiled' => realpath(storage_path().'/framework/views'),
     ],
+    'mail' => [
+        'driver' => 'mail',
+    ],
     'cache' => [
         'default' => 'file',
         'stores' => [