As a user, I want to be notified if a LLExpress postcard was Returned to Sender. Furthermore, the ability to view and access this postcard digitally, and print.

It would be very useful to communicate any time-sensitive information, and to not confuse residents.

This would provide more transparency to resident, connections and staff users as
it can take postcards well over a month to be received as RTS, edited, reprinted and re-sent.