Can a customer set its own Delivery Server/Sending Domain?

Hello @twisted1919 ,
Can I a customer enter its own sending domain after inserting DKIM in sending domain.
I enable this option through "setting -> customer -> domans -> sending domains -> yes" but not finding this option in customer panel. Can you please help ?
@twisted1919 , Can customer add his Own SMTP or Delivery server From his Own Account without admin, i don't see any features like that. if so tell me where and if not please release this option in your next release. Hide Pricing for Specific Customers feature i have told you about.