Mail that is undeliverable due to the recipient being deceased.

डाक जो उस व्यक्ति तक नहीं पहुंचाई जा सकती जो मृत है।

English Usage: After the funeral, the family received several pieces of dead mail addressed to their father.

Hindi Usage: अंतिम संस्कार के बाद, परिवार को उनके पिता के नाम से कई टुकड़े मृत डाक मिली।