Action_mailbox default routing issue

Hello Everyone, We have a requirement to access inbound emails from our Rails 6 application. We have gone through the link below and tried to implement this feature. But our application is not hitting the ApplicationMailbox where we set the inbound emails routing. We are not sure what is stopping here? In our existing rails 6 application has already routes set it in the config/routes.rb, will it stops mailbox default routing?

Below code is not hitting from our application using action_mailbox UI to test inbound emails in the development environment, could you please check and help me on the same?

UI Url(development) : /rails/conductor/action_mailbox/inbound_emails

Code: class ApplicationMailbox < ActionMailbox::Base

routing /something/i => :somewhere

byebug routing :all => :forwards end