diff --git a/config/application.rb b/config/application.rb
index 3731f5a..c701f24 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -8,7 +8,7 @@ require "active_record/railtie"
 # require "active_storage/engine"
 require "action_controller/railtie"
 require "action_mailer/railtie"
-# require "action_mailbox/engine"
+require "action_mailbox/engine"
 # require "action_text/engine"
 require "action_view/railtie"
 require "action_cable/engine"