N.J. Stat. § 2A:18-73
To dispose of a tenant's property under this act, a landlord shall first give written notice to the tenant, which shall be sent by certified mail, return receipt requested or by receipted first class mail addressed to the tenant, at the tenant's last known address (which may be the address of the premises) and at any alternate address or addresses known to the landlord, in an envelope endorsed "Please Forward."
"Receipted first class mail" for purposes of this section means first class mail for which a certificate of mailing has been obtained by the sender but does not include certified or registered mail.
When the property subject to disposal is a manufactured or mobile home, a copy of the notice required pursuant to this section shall also be sent to the Director of the Division of Motor Vehicles and to any lienholders with security interests in the property which have been recorded with the Division of Motor Vehicles.
N.J.S. § 2A:18-73