U.S. Code of Federal Regulations
Regulations most recently checked for updates: Oct 07, 2025
§ 320.1 - Definitions.
The definitions in § 310.1 apply to part 320 as well.
§ 320.2 - Suspension for certain data processing materials.
(a) The operation of 39 U.S.C. 601(a) (1) through (6) and § 310.2(b) (1) through (6) of this chapter is suspended on all post routes for data processing materials defined in paragraph (c) of this section on the terms detailed in paragraph (b) of this section, subject to the operating requirements in § 320.3.
(b) The suspension referred to in paragraph (a) of this section is for data processing materials conveyed (1) to a data processing center, if carriage is completed within 12 hours or by noon of the addressee's next business day and if data processing work is commenced on such materials within 36 hours of their receipt at the center; or (2) back from the data processing center to the address of the office originating the incoming materials, if carriage is completed within 12 hours or by noon of the addressee's next business day, and if data processing work was commenced on the incoming materials within 36 hours of their receipt at the center. For purposes of the time limitations for completion of delivery referred to in the preceding sentence, delivery of shipments between a domestic point and a foreign point shall be deemed to begin at the time materials of foreign origin are received at the international gateway city or end at the time materials of domestic origin leave the international gateway city. This suspension does not apply to carriages from or to originating offices that are neither part of the firm owning the data processing center nor data processing customers of the firm owning the data processing center.
(c) For purposes of this suspension, (1) “addressee's next business day” means the first calendar day, stated in his local time, on which he conducts business, following the calendar day of dispatch, stated in the sender's local time; (2) “data processing” means electro-mechanical or electronic processing and includes the recording of data by electro-mechanical or electronic means for further processing; and (3) “data processing materials” means materials of all types that are sent exclusively for data processing and are ready for immediate data processing, but only if they are produced recurringly in the course of the normal business operations of the office originating them or receiving them back from the processing center. The performance of clerical work which is merely preparatory and incidental to the commencement of data processing is not, for purposes of this suspension, inconsistent with the requirement that the materials be sent exclusively for data processing and be ready for immediate data processing.
§ 320.3 - Operations under suspension for certain data processing materials.
(a) Carriers intending to establish or alter operations based on the suspension granted pursuant to § 320.2 shall, as a condition to the right to operate under the suspension, notify the Manager, Mailing Standards, U.S. Postal Service, 475 L'Enfant Plaza SW, Rm. 3436, Washington, DC 20260-3436, of their intention to establish such operations not later than the beginning of such operations. Such notification, on a form available from the office of Mailing Standards, shall include information on the identity and authority of the carrier and the scope of its proposed operations.
(b) Carriers operating under the suspension granted pursuant to § 320.2 are responsible for making sure that their carriage of matter under the suspension meets all conditions contained in § 320.2. (See § 310.4.) The containers or covers of any matter carried under the suspension must be made available for examination upon request by a properly identified representative of Mailing Standards. Carrier records—either in the form of notations on the containers or covers of any matter carried under the suspension granted pursuant to § 320.2 or in the form of records kept by employees of the actual times they make delivery or pickup stops—must be sufficient to show that the delivery of such matter was completed within the applicable time limitation prescribed in § 320.2. The provisions of this paragraph shall not restrict the Postal Service in the exercise of search powers conferred upon it by law.
(c) The filing of notifications under this section does not relieve the operator of responsibility for assuring that its operations conform to applicable statutes and regulations.
(d) Failure to comply with the notification requirements of this section and carriage of material or other action in violation of other provisions of this part and of part 310 are grounds for administrative revocation of the suspension as to a particular carrier for a period of not less than one year, in a proceeding instituted by the General Counsel, following a hearing by the Judicial Officer Department in accordance with the rules of procedure set out in part 959 of this chapter.
The form referred to in § 320.3 is reproduced below.
1. Designate the specific markets or areas in which operations will be conducted.
2. Describe specifically any authorizations issued by local, state, or federal regulatory agencies under which operations will be conducted.
Subscribed and sworn to before me this —— day of —————, 197——.
Seal
False statements contained herein are punishable by law, 18 U.S.C. 1001.)
§ 320.4 - Suspension for certain letters of college and university organizations.
The operation of 39 U.S.C. 601(a) (1) through (6) and § 310.2(b) (1) through (6) of this chapter is suspended on all post routes to permit colleges and universities to carry in their internal mail systems the letters of their bona fide student or faculty organizations to campus destinations. This suspension does not cover the letters of faculty members, students, or organizations other than bona fide student or faculty organizations of the carrying college or university. Colleges and universities choosing to provide their student or faculty organizations access to their internal mail systems are responsible for assuring that only letters of bona fide student or faculty organizations addressed to campus destinations are carried. (See § 310.4.) For purposes of this suspension, “internal mail systems” are those which carry letters on, between, and among the various campuses of a single college or university and which operate in accordance with the Letters of the carrier exception in 39 CFR 310.3(b).
§ 320.5 - Suspension for certain international-ocean carrier-related documents.
The operation of 39 U.S.C. 601(a) (1) through (6) and § 310.2(b) (1) through (6) of this chapter is suspended on all post routes for documents, sent by a shipper or an ocean carrier from a foreign origin to a United States ocean-carrier port city destination or from a United States ocean-carrier port city origin to a foreign destination, that would be excepted under § 310.3(a) if the documents accompanied the cargo. This suspension covers only shipments to or from ports where the cargo to which the documents relate is actually loaded on, or unloaded from, an ocean vessel. For purposes of this suspension “foreign origins” or “foreign destinations” means origins or destinations outside the contiguous 48 states.
§ 320.6 - Suspension for extremely urgent letters.
(a) The operation of 39 U.S.C. 601(a) (1) through (6) and § 310.2(b) (1) through (6) of this chapter is suspended on all post routes for extremely urgent letters if the conditions of either paragraph (b) or (c) of this section, and of the other paragraphs of this section, are met.
(b)(1) For letters dispatched within 50 miles of the intended destination, delivery of those dispatched by noon must be completed within 6 hours or by the close of the addressee's normal business hours that day, whichever is later, and delivery of those dispatched after noon and before midnight must be completed by 10 A.M. of the addressee's next business day. For other letters, delivery must be completed within 12 hours or by noon of the addressee's next business day. The suspension is available only if the value or usefulness of the letter would be lost or greatly diminished if it is not delivered within these time limits. For any part of a shipment of letters to qualify under this paragraph (b), each of the letters must be extremely urgent.
(2) Letters sent from the 48 contiguous states of the United States to other jurisdictions of the United States or to other nations are deemed “delivered” when they are in the custody of the international or overseas carrier at its last scheduled point of departure from the 48 contiguous states. Letters sent from other jurisdictions of the United States or from other nations into the 48 contiguous states are deemed “dispatched” when they are in the custody of the domestic carrier, having been passed by United States Customs, if applicable, at the letters' point of arrival in the 48 contiguous states.
(3) Except as provided in this paragraph (b)(3), the times and time limits specified in paragraph (b)(1) of this section are not applicable to any locations outside the 48 contiguous states. The times and time limits specified in paragraph (b)(1) of this section are applicable to letters dispatched and delivered wholly within Alaska, Hawaii, Puerto Rico or a territory or possession of the United States. The regulations provided in paragraph (b)(2) of this section relating to the delivery and dispatch of letters are applicable by analogy to letters shipped between these jurisdictions and other nations.
(c) It will be conclusively presumed that a letter is extremely urgent and is covered by the suspension if the amount paid for private carriage of the letter is at least three dollars or twice the applicable U.S. postage for First-Class Mail (including priority mail) whichever is the greater. If a single shipment consists of a number of letters that are picked up together at a single origin and delivered together to a single destination, the applicable U.S. postage may be computed for purposes of this paragraph as though the shipment constituted a single letter of the weight of the shipment. If not actually charged on a letter-by-letter or shipment-by-shipment basis, the amount paid may be computed for purposes of this paragraph on the basis of the carrier's actual charge divided by a bona fide estimate of the average number of letters or shipments during the period covered by the carrier's actual charge.
(d) The sender must prominently mark the outside covers or containers of letters carried under this suspension with the words “Extremely Urgent” or “Private Carriage Authorized by Postal Regulations (39 CFR 320.6)” or with a similar legend identifying the letters as carried pursuant to this suspension. In addition, each outside container or cover must show the name and address of the carrier, and the name and address of the addressee. Carrier records must be sufficient to show that the delivery of the letters was completed within the applicable time limitations, if carried under the authority of paragraph (b) of this section, and must be made available for inspection at the request of the Postal Service. The required records may be either in the form of notations on the containers or covers of any letters asserted to be carried under this suspension, or in the form of records kept by employees of the actual times they pick up and deliver such materials.
(e) Violation by a shipper or carrier of the terms of this suspension is grounds for administrative revocation of the suspension as to such shipper or carrier for a period of one year in a proceeding instituted by the General Counsel, following a hearing by the Judicial Officer Department in accordance with the rules of procedure set out in Part 959 of this chapter. The period of the revocation may be reduced or be extended for not to exceed one additional year by the Judicial Officer, depending on such mitigating or aggravating factors as the extent of the postal revenue lost because of the violation and the presence or absence of good faith error or of previous violations. The failure of a shipper or carrier to cooperate with an authorized inspection or audit conducted by the Postal Inspection Service for the purpose of determining compliance with the terms of this suspension shall be deemed to create a presumption of a violation for the purpose of this paragraph (e) and shall shift to the shipper or carrier the burden of establishing the fact of compliance. Revocation of this suspension as to a shipper or carrier shall in no way limit other actions as to such shipper or carrier to enforce the Private Express Statutes by administrative proceedings for collection of postage (see § 310.5) or by civil or criminal proceedings.
(f) The following examples illustrate the application of this suspension.
§ 320.7 - Suspension for advertisements accompanying parcels or periodicals.
(a) The operation of 39 U.S.C. 601(a) (1) through (6) and § 310.2(b) (1) through (6) of this chapter is suspended on all post routes for advertisements enclosed with merchandise in parcels or accompanying periodicals under the following circumstances:
(1) The advertisements must not be marked with the names or addresses of the intended recipients.
(2) The advertisements must be incidental to the shipment of the merchandise or the periodical.
(i) An advertisement is incidental to the shipment of the accompanying merchandise or the periodical when the merchandise or the periodical has been ordered by or would otherwise be sent to the recipient even without the accompanying advertisement.
(ii) Notwithstanding § 320.7(a)(2)(i), an advertisement is not incidental to the merchandise when the pertinent circumstances, such as the nominal value of the merchandise, its shipment on an unsolicited basis, or its status as a sample, reasonably indicate that the shipper's primary purpose is the conveyance of the advertisement itself and that the merchandise is merely an adjunct to the advertisement.
(b) An item is an advertisement if its primary purpose is to cause or induce the purchase of goods or services from the shipper or others.
§ 320.8 - Suspension for international remailing.
(a) The operation of 39 U.S.C. 601(a)(1) through (6) and § 310.2(b)(1) through (6) of this chapter is suspended on all post routes to permit the uninterrupted carriage of letters from a point within the United States to a foreign country for deposit in its domestic or international mails for delivery to an ultimate destination outside the United States.
(b) This suspension shall not permit the shipment or carriage of a letter or letters out of the mails to any foreign country for subsequent delivery to an address within the United States.
(c) Violation by a shipper or carrier of the terms of this suspension is grounds for administrative revocation of the suspension as to such shipper or carrier for a period of one year in a proceeding instituted by the General Counsel in accordance with part 959 of this chapter. The failure of a shipper or carrier to cooperate with an inspection or audit authorized and conducted by the Postal Inspection Service for the purpose of determining compliance with the terms of this suspension shall be deemed to create a presumption of a violation for the purpose of this paragraph (c) and shall shift to the shipper or carrier the burden of establishing the fact of compliance. Revocation of this suspension as to a shipper or carrier shall in no way limit other actions as to such shipper or carrier to enforce the Private Express Statutes by administrative proceedings for collection of postage (see § 310.5) or by civil or criminal proceedings.
§ 320.9 - Revocation or amendment of suspensions.
These suspensions may be revoked or amended in accordance with § 310.7. No revocation of the suspension provided in § 320.2 will curtail operations of particular carriers existing at the time of the revocation to a level of operations (in dollar or volume terms, whichever is larger) lower than that antedating the revocation in a particular market served prior to the revocation. Should the suspension referred to in § 320.2 be revoked, carriers, as a condition to continuing operations under this section, will be required to provide reasonably complete and accurate data to support estimates of past operating levels in particular markets.