; and (ii) any additional costs associated with the administration of the fees collected; and (B) transfer to the Postal Service the portion representing the cost to the Postal Service of providing the services under subsection (a). (c) Rulemaking The Postal Service may promulgate regulations that— (1) subject to paragraph (2), minimize the cost of providing the services under subsection (a); and (2) do not require the Postal Service to incur additional expenses that are not recoverable under subsection (b). (d) Notice of changes The Postal Service shall notify the Secretary of any changes to the Hold for Pickup service or the Signature Confirmation service. (e) Use of private carrier (1) In general If the Secretary determines that a private carrier that offers substantially similar services to the Hold for Pickup and Signature Confirmation services would provide better service and value than the Postal Service provides under subsection (a), the Secretary may, in accordance with paragraph (2) of this subsection— (A) discontinue use of the services of the Postal Service under subsection (a); and (B) enter into a contract with the private carrier under which a person to whom a document is sent under the Secure Mail Initiative (or any successor program) may elect to have the private carrier use one of the substantially similar services in delivering the document. (2) Requirements The Secretary may not exercise the authority under paragraph (1) unless the Secretary— (A) determines, and notifies the Postal Service, that the private carrier offers services that are substantially similar to the Hold for Pickup and Signature Confirmation services; (B) provides for an option under the Secure Mail Initiative (or any successor program) under which a person to whom a document is sent under that initiative may elect a service under paragraph (1)(B)