diff --git a/config/app.php b/config/app.php
index 958990f5..a1712655 100644
--- a/config/app.php
+++ b/config/app.php
@@ -181,6 +181,7 @@ return [
         Modules\Dashboard\DashboardServiceProvider::class,
         Modules\Module\ModuleServiceProvider::class,
         Modules\Invoice\InvoiceServiceProvider::class,
+        Modules\Mailgateway\MailgatewayServiceProvider::class,
     ],
 
     /*