; or (II) when appropriately designated by the owner, purchaser, or consignee of the merchandise, by a person holding a valid license under section 641. (ii) The Postmaster General shall be deemed the consignee for merchandise, as defined by section 498(c), imported through the mail, and the Postmaster General shall, at the Postmaster General's sole expense, designate a person holding a valid license under section 641 to file the required documentation or information or ensure that the owner or purchaser of the merchandise or a person holding a valid license under section 641 that is designated by the owner or purchaser files the required documentation or information. (iii) When a consignee declares on entry that he or she is the owner or purchaser of merchandise, U.S. Customs and Border Protection may, without liability, accept the declaration. (iv) For the purposes of this Act, the importer of record must be one of the parties who is eligible to file the documentation or information required by this section. . (b) Informal entries Section 498 of the Tariff Act of 1930 ( 19 U.S.C. 1498 ) is amended by adding at the end the following: (c) Application to postal shipments (1) Definitions In this subsection: (A) Document The term document means a piece of written, drawn, printed, or digital information, excluding objects of merchandise, that— (i) is conveyed in an envelope that is less than or equal to 165 millimeters in width, 245 millimeters in length, and 5 millimeters in depth