1 files changed, 12 insertions, 1 deletions
diff --git a/lib/action_mailbox/engine.rb b/lib/action_mailbox/engine.rb
index 6a0312c65f..cf438d8f24 100644
--- a/lib/action_mailbox/engine.rb
+++ b/lib/action_mailbox/engine.rb
@@ -10,10 +10,21 @@ module ActionMailbox
 
     initializer "action_mailbox.config" do
       config.after_initialize do |app|
-        ActionMailbox.ingress = app.config.action_mailbox.ingress
         ActionMailbox.logger = app.config.action_mailbox.logger || Rails.logger
         ActionMailbox.incinerate_after = app.config.action_mailbox.incinerate_after || 30.days
       end
     end
+
+    initializer "action_mailbox.ingress" do
+      config.after_initialize do |app|
+        if ActionMailbox.ingress = app.config.action_mailbox.ingress.presence
+          config.to_prepare do
+            if ingress_controller_class = "ActionMailbox::Ingresses::#{ActionMailbox.ingress.to_s.classify}::InboundEmailsController".safe_constantize
+              ingress_controller_class.prepare
+            end
+          end
+        end
+      end
+    end
   end
 end