1. Proposed title of this feature request.
    => Send a mail from the Satellite server for unsubscribed hosts. 
           
    2. Who is the customer behind the request?  

    3. What are the nature and description of the request?  
    => This will help for manage the unsubscribed hosts and attach a subscription if not attached. 
      
    4. Why customer need this? (List the business requirements here).
    => This will help to get the list automatically instead of generating the report template. ( This feature is also not available using report-template). 
      
    5. How would the customer like to achieve this? (List the functional requirements here).   
    => Setallite should have an option in the Users-> Email Preference for the unsubscribed hosts list.
      
    6. For each functional requirement listed, specify how Red Hat and the customer can test to confirm the requirement is successfully implemented.  
    => Satellite -> Users -> Select Users -> Email -> Here should be an option for unsubscribed hosts. 
      
    7. Does customer have any specific timeline dependencies and which release would they like to target (i.e. Satellite 6.8,7)?  6.8 atleast 
      
    8. List any affected packages or components.  
      
    9. Would customer be able to assist in testing this functionality if implemented?  YES

Additional info:
The list can be achieved by applying the filter from hosts -> Content hosts using the filter "subscription_status =  valid" or "subscription_status =   unknown". This feature will help to automate this functionality.

*** This bug has been marked as a duplicate of bug 1849227 ***