USPS Returns
USPS Returns is a USPS method for verifying and paying for return packages, built for Merchandise Return Service and Scan Based Payment customers.USPS Returns User Guidepage 3“USPS has developed a new automated verification and payment method for Merchandise Return Service (MRS) and Scan Based Payment (SBP) customers, which is branded as USPS Returns®.”USPS original A business gives its customers prepaid return labels.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 120“USPS Returns allows merchants to provide a pre-printed, postage paid return label for their customers to return merchandise.”USPS original USPS prices each returned package on its own and charges the business's Enterprise Payment System account.USPS Returns User Guidepage 3“The upgraded infrastructure enables USPS to price each package individually, provide package-level visibility for pricing, eliminate most manual pricing activities, and return packages directly to Returns customers.”USPS originalUSPS Returns User Guidepage 18“The Enterprise Payment System (EPS) account associated to the enrolled MID is charged for the returns.”USPS original
What it is
USPS Returns replaces manual postage and fee assessments with automated pricing.USPS Returns User Guidepage 3“The new methodology for USPS Returns replaces current manual postage and fee assessments and improves visibility of return packages.”USPS original Upgraded mail processing equipment captures each package's attributes, and USPS prices the package from them.USPS Returns User Guidepage 3“USPS Returns leverages upgraded Mail Processing Equipment (MPE) to capture package attributes to expedite processing and enable consistently accurate pricing.”USPS original The package then goes directly to the returns customer, the business that issued the label.USPS Returns User Guidepage 3“The upgraded infrastructure enables USPS to price each package individually, provide package-level visibility for pricing, eliminate most manual pricing activities, and return packages directly to Returns customers.”USPS original
It answers problems in the Merchandise Return Service process, the returns program billed by hand.USPS Returns User Guidepage 12“Legacy MRS labels will continue being processed/billed through the manual MRS workflow (shipper’s local payment account or CAPS account is billed in PostalOne!).”USPS original That process relies on sampling, lacks package-level pricing and visibility, and holds packages at postage due units.PostalPro: USPS Returns“The current MRS process pose challenges such as reliance on sampling, lack of package-level pricing details, lack of visibility when a returned package travels through the mail stream, and packages held at postage due units before being returned to traditional verification customers.”USPS original
A merchant qualifies with at least 10,000 returns a year.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 120“Receive a minimum of 10,000 returns per year.”USPS original Any mix of eligible mail classes counts toward that total.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 120“Any combination of eligible classes of mail may be combined to meet this threshold.”USPS original The merchant also holds a Merchandise Return Service permit and pays its account maintenance fees each year.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 120“Must establish a MRS permit and pay applicable account maintenance fees annually.”USPS original
Scan Based Payment and Parcel Return Service Full Network customers keep their labels and service type codes.USPS Returns User Guidepage 4“Scan Based Payment and Parcel Return Service (PRS)-Full Network customers do not need to make any changes to their label formats and will continue using the STC(s) utilized today.”USPS original Every other customer, including Merchandise Return Service customers, moves to the USPS Returns label.USPS Returns User Guidepage 12“All other customers, including those using MRS, must transition to the new automated USPS Returns label design.”USPS original
How it works
USPS Returns runs in three phases: enrollment, transactions and reporting.USPS Returns User Guidepage 3“Appendix E, USPS Returns, shows the key steps in Enrollment, Transactions, and Reporting.”USPS original After enrollment, USPS prices each package per transaction as it moves through the network.USPS Returns User Guidepage 7“USPS Returns packages will be priced per transaction using published commercial, NSA or CPP prices, as applicable as they move through the USPS network and as follows:”USPS original
- The returns customer registers in the Business Customer Gateway and adds its Customer Registration Identifications, or CRIDs.USPS Returns User Guidepage 3“Returns customers register in the BCG to enroll in USPS Returns and add the necessary Customer Registration Identifications (CRID) to profiles.”USPS original
- The customer sets up its Enterprise Payment System account, or EPS account, funded by local deposits, Fedwire or ACH.USPS Returns User Guidepage 18“Returns customers must set-up an EPS account which can be funded with local deposits, Fedwire, ACH Credit, and ACH Debit.”USPS original
- The customer chooses the Mailer IDs its labels print in the IMpb, the Intelligent Mail package barcode.USPS Returns User Guidepage 18“The MID will be printed in the Intelligent Mail package barcode (IMpb) on the return label(s).”USPS original
- Each Mailer ID must be on the same CRID as the EPS account.USPS Returns User Guidepage 18“The MID must be located on the same CRID as the EPS account (which will be linked to the EPS account during enrollment).”USPS original
- A USPS Sales Representative links any contract pricing to those Mailer IDs.USPS Returns User Guidepage 18“USPS Sales Representative will work with existing Returns customers on their Negotiated Service Agreement (NSA) or Commercial Plus™ Pricing (CPP) authorizations in order to link contract pricing to their MID(s) for use in USPS Returns.”USPS original
- The customer prints labels with its enrolled Mailer IDs and approved service type codes.USPS Returns User Guidepage 4“USPS Returns customers must use the enrolled MIDs and approved STCs when creating their USPS Returns labels.”USPS original
- The customer calls the Mailing and Shipping Solution Center to enroll its CRID, Mailer IDs and service type codes.USPS Returns User Guidepage 6“Once a Returns customer is ready to participate, they will contact the Mailing and Shipping Solution Center (MSSC) at 1-877-672-0007 to begin their enrollment.”USPS originalUSPS Returns User Guidepage 18“Existing Returns customers provide: CRID, MIDs (Mailer IDs) and Service Type Codes (STCs) which will be included on the return label(s).”USPS original
- A consumer mails the package at retail, by carrier pickup or in a collection box.USPS Returns User Guidepage 7“Deposit of USPS Returns packages may be initiated by consumers through retail, carrier pickup, or drop-off in a collection box.”USPS original
- The customer may send a Shipping Services File manifest to insure a package.USPS Returns User Guidepage 18“Prepare and submit an optional electronic Shipping Service Files (SSF) through Data Transfer Services (DTS) for inclusion of insurance coverage for individual USPS Returns packages.”USPS original
- USPS collects the package's weight, dimensions and mail class in the network to price it.USPS Returns User Guidepage 18“Attributes such as: weight, dimensions, and class of mail are collected as packages move through the network and those attributes are used to accurately price packages.”USPS original
- USPS charges the EPS account at the delivery scan or 14 days after the last scan.USPS Returns Fact SheetPDF page 1“The Package Platform will charge the EPS account associated to the MID at the time of the delivery scan event or 14 days after last scan event.”USPS original
- The customer reviews its transactions in EPS and its data feeds in IV-MTR.USPS Returns User Guidepage 8“USPS Returns customers will have the ability to review summary and transaction reports through the EPS.”USPS originalUSPS Returns User Guidepage 9“USPS Returns customers will also have the ability to enroll in customizable transaction level data extracts through the Informed Visibility® (IV®) Mail Tracking & Reporting (MTR) application (iv.usps.com).”USPS original
When the returns customer preprints a QR code on the label, a consumer can scan it to request a free pickup or find a Post Office.USPS Returns User Guidepage 7“Consumers can also scan the Quick Release (QR) Code on the USPS Returns label to request free package pickup or to locate a Post Office for package drop off, if one is pre-printed on the label by the USPS Returns customer.”USPS original The returns customer can sign up for a notice when a package enters the mailstream.USPS Returns User Guidepage 7“USPS Returns customer can enroll in package tracking and receive a notification when their USPS Returns packages have been detected as being entered into the USPS mailstream.”USPS original
The label
A USPS Returns label is 4x6 inches.USPS Returns User Guidepage 5“The USPS Returns label dimensions are 4x6”USPS original It must carry these design elements:USPS Returns User Guidepage 5“USPS Returns labels must have the following design elements:”USPS original
- Service Icon Block
- Postage Guarantee Imprint
- Pre-Printed or Handwritten Return Address
- Service Banner
- Delivery Address
- IMpb with the Mailer ID and service type code
The label may also carry additional information and a user segment or QR code.USPS Returns User Guidepage 5“OPTIONAL: Additional information and User Segment/QR Code (7)”USPS original
An illustrative USPS Returns barcode with a Priority Mail Return service type code. The Mailer ID and the service type code are the two fields a customer enrolls.USPS Returns User Guidepage 4“USPS Returns customers must use the enrolled MIDs and approved STCs when creating their USPS Returns labels.”USPS original
The Mailer ID and serial number are examples.
| Field | Digits | Meaning |
|---|---|---|
| Routing code | 420 | |
| Destination ZIP Code | 641219998 | |
| Channel | 92 | A commercial mailer with a nine-digit Mailer ID.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 52““92” - used with Commercial Mailer (Nine-digit MID) “93” - used with Commercial Mailer (Six-digit MID)”USPS original |
| Service type code | 019 | One of the customer's approved codes, which sets the mail class and any extra services.USPS Returns User Guidepage 4“The STC is a unique identifier included in the IMpb which specifies the Mail Class and may include Extra Services”USPS originalPriority Mail ReturnUpdated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)Effective June 24, 2026 · code 019Code019DescriptionPriority Mail ReturnMail classPMBanner textUSPS TRACKING #Extra service codes452USPS original |
| Mailer ID | 912345678 | An enrolled Mailer ID, whose EPS account USPS charges for the package.USPS Returns User Guidepage 18“The Enterprise Payment System (EPS) account associated to the enrolled MID is charged for the returns.”USPS original |
| Serial number | 0000001 | |
| Check digit | 3 |
- Passed34 digits: format C01, a nine-digit Mailer ID and a nine-digit ZIP.Intelligent Mail® Package Barcode (IMpb) Specificationpage 13“Format C01 - Commercial Mail (9 digit MID, ZIP+4) 34 digits”USPS original
- PassedCheck digit 3 matches fields 3 to 6.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 52“Calculate the check digit using the PIC portion of the data, which does not include the Postal Routing Code Application Identifier and Destination ZIP Code if included.”USPS originalPublication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 59“Step 6: The check digit is the smallest number which, when added to the result obtained through step 5, gives a number that is a multiple of 10.”USPS original
- PassedThe nine-digit Mailer ID starts with 9, as it must.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 28“A six-digit MID must begin with 0–8 • A nine-digit MID must begin with 9”USPS original
- Passed019 is in Appendix I, effective 06/24/2026.Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)Effective June 24, 2026 · code 019Code019DescriptionPriority Mail ReturnMail classPMBanner textUSPS TRACKING #Extra service codes452USPS original
A customer can request a USPS Cloud Tool API label option.USPS Returns User Guidepage 4“USPS has a Cloud Tool Application Interface (API) label option that can be requested by contacting the USPS Mailing & Shipping Solution Center at 1-877-672-0007.”USPS original It can also print its own labels, with vendor software or with its own barcode software.USPS Returns User Guidepage 4“USPS Returns customers may purchase software through a vendor that has authorized USPS label options. … USPS Returns customers may create their own labels with barcode/label template software.”USPS original The National Customer Support Center certifies privately printed labels.USPS Returns User Guidepage 4“Privately printed labels must be certified by the National Customer Support Center (NCSC).”USPS original For certification, the shipper sends 10 sample labels and PS Form 5052.USPS Returns User Guidepage 4“Shipper must send 10 sample labels and PS Form 5052, Printer Certification Submission (https://about.usps.com/forms/ps5052.pdf) to:”USPS original
Service type codes
The service type code is the identifier in the IMpb that sets the mail class and any extra services.USPS Returns User Guidepage 4“The STC is a unique identifier included in the IMpb which specifies the Mail Class and may include Extra Services”USPS original The customer picks codes by mail class and extra services.USPS Returns User Guidepage 6“Choose the USPS Returns Service Type Codes (STC) based on the desired mail class and /or mail class and Extra Service (s) from the available STC that are listed in Appendix B.”USPS original
Extra Service Codes, Pub 199 Appendix J Table 7, 452Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 458Code452Extra serviceUSPS ReturnsUSPS original
- Extra service
- USPS Returns
Service type codes that include extra service 452.
| Code | Description | Mail class | Extra service codes |
|---|---|---|---|
| 019 | Priority Mail Return | PM | 452 |
| 020 | USPS Ground Advantage Return: Up to 15.999oz | FC | 452 |
| 022 | USPS Ground Advantage Return: One Pound or More | FC | 452 |
| 037 | Priority Mail Return: Hazardous Materials | PM | 452, 857 |
| 187 | USPS Ground Advantage Return: Up to 15.999oz Hazardous Materials | FC | 452, 857 |
| 190 | USPS Ground Advantage Return: Up to 15.999oz Insurance <= $500 Hazardous Materials | FC | 930, 452, 857 |
| 191 | USPS Ground Advantage Return: Up to 15.999oz Insurance > $500 Hazardous Materials | FC | 931, 452, 857 |
| 217 | USPS Ground Advantage Return: Up to 15.999oz Division 6.2 Hazardous Materials | FC | 452, 826 |
| 218 | USPS Ground Advantage Return: One Pound or More Division 6.2 Hazardous Materials | FC | 452, 826 |
| 219 | Priority Mail Return: Division 6.2 Hazardous Materials | PM | 452, 826, 857 |
1 to 10 of 29 codes in the IMpb Service Type Code List, Appendix I, where Extra service codes is 452.
Pricing
USPS prices each package per transaction at published commercial prices or at contract prices.USPS Returns User Guidepage 7“USPS Returns packages will be priced per transaction using published commercial, NSA or CPP prices, as applicable as they move through the USPS network and as follows:”USPS original It uses the first price in this order that it can:USPS Returns User Guidepage 7“The following pricing hierarchy will be used:”USPS original
| Price | When USPS uses it |
|---|---|
| Characteristic | USPS captured every attribute it needs during processing, such as weight and dimensions.USPS Returns User Guidepage 7“Packages will be priced using their attributes when the required set of attributes are captured during processing (STC, MID, Weight, Dimensions, Origin/ Destination ZIP Codes, and USPS Packaging Barcodes (UPCs) (i.e. flat rate packaging UPCs).”USPS original |
| Manifest | Captured attributes are missing, and the customer submitted a manifest file.USPS Returns User Guidepage 7“If captured attributes are not available, the packages will be priced using their manifested attributes if a manifest file is submitted by the USPS Returns customer.”USPS original |
| Average | Captured attributes are missing, and the customer has an average postage.USPS Returns User Guidepage 7“The USPS Returns customer specific average postage will be used when captured attributes are not available.”USPS original |
| Default | No attributes were captured, and no customer average exists.USPS Returns User Guidepage 8“Default price is used when no attributes were captured, and no average customer specific data is available.”USPS original |
USPS calculates the average each month for each Mailer ID and mail class, from characteristic-priced packages.USPS Returns User Guidepage 8“The USPS Returns customer specific average postage is calculated on a monthly cadence for each MID/Mail class combination based on characteristic-priced packages.”USPS original It needs at least 25 such packages first.USPS Returns User Guidepage 8“A minimum of 25 characteristic-priced packages is required before shipper specific averages can be established.”USPS original An average applies in the next calendar month.USPS Returns User Guidepage 8“Calculated average price is used in the next calendar month.”USPS original
USPS calculates a default price for each Mailer ID and mail class at account set-up.USPS Returns User Guidepage 8“During account set-up, a default price will be calculated by USPS per MID and mail class combination.”USPS original A customer already using USPS for returns gets a default from its previous month of data.USPS Returns User Guidepage 7“If the Returns customer is already using USPS for their returns (e.g. MRS), the previous month of historical data will be used to establish default postage.”USPS original A customer of another supplier may give USPS its returns profile from that supplier.USPS Returns User Guidepage 7“If the Returns customer uses another supplier for their returns, they may provide their returns profile for the previous month from their current supplier which will be used to establish default postage.”USPS original Without returns data, USPS uses the previous month of outbound data.USPS Returns User Guidepage 7“If returns historical data is not available, the previous month of historical outbound data will be used to establish default postage.”USPS original
A shipper with a Negotiated Service Agreement for one mail class pays published commercial prices for every other mail class.USPS Returns User Guidepage 12“If a shipper has an approved NSA for only one mail class, they will receive published commercial prices for all other mail classes.”USPS original
USPS Returns also has a Scan Based Payment label.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 120“Exhibit 23: USPS Returns (Scan Based Payment) Label”USPS original Items on that label are charged an average uniform price based on sampling, adjusted monthly.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 120“Items are charged an average uniform price based on sampling, usually at the point of origin … The average uniform price is adjusted monthly”USPS original Its postage is collected for each piece that gets a physical scan in Product Tracking and Reporting.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 120“Postage is collected based on number of pieces receiving a physical scan in PTR”USPS original
Payment
USPS Ship, formerly the Package Platform, charges the EPS account linked to the package's Mailer ID.PostalPro: USPS Returns“Detailed information on the USPS Ship (Formerly Package Platform) data elements available through the Informed Visibility Mail Tracking & Reporting (IV-MTR) application.”USPS originalUSPS Returns User Guidepage 8“The Package Platform will charge the EPS account associated to the MID at the time of the delivery scan event (scan Event Code 01) or fourteen days after last scan event when package attributes are not obtained.”USPS original It charges at the delivery scan, event code 01, or fourteen days after the last scan when it gets no package attributes.USPS Returns User Guidepage 8“The Package Platform will charge the EPS account associated to the MID at the time of the delivery scan event (scan Event Code 01) or fourteen days after last scan event when package attributes are not obtained.”USPS original
PTR Domestic Scan Events, October 2026, 01PTR Domestic Scan Events and DescriptionsPDF page 1Event01Extract descriptionDELIVEREDUSPS.com wordingDeliveredStatus categoryDeliveredWhat it meansThe article has been delivered and a delivery scan recorded the time and date of deliveryStarts the clockNoStops the clockYesUSPS original
- Event
- 01
- Extract description
- DELIVERED
- What it means
- The article has been delivered and a delivery scan recorded the time and date of delivery
A trust account is drawn down at once.USPS Returns User Guidepage 8“If the EPS account provided during enrollment is a Trust Account, the EPS account will be drawn down immediately.”USPS original A debit account's transactions are held until 6:00 pm EST and billed once a day.USPS Returns User Guidepage 8“If the provided EPS account is a Debit Account, transactions will be held until 6:00 pm EST and billed as a daily transaction.”USPS original
Reporting
A returns customer reviews summary and transaction reports in EPS.USPS Returns User Guidepage 8“USPS Returns customers will have the ability to review summary and transaction reports through the EPS.”USPS original It can also subscribe to transaction-level data feeds in IV-MTR, the Informed Visibility Mail Tracking & Reporting application at iv.usps.com.USPS Returns User Guidepage 9“USPS Returns customers will also have the ability to enroll in customizable transaction level data extracts through the Informed Visibility® (IV®) Mail Tracking & Reporting (MTR) application (iv.usps.com).”USPS original A feed arrives as a push report over Secure File Transfer Protocol or as a pull report to download.USPS Returns User Guidepage 9“Users will be able to select either Push Reports, which will be sent through Secure File Transfer Protocol (SFTP) or Pull Reports, which will be available for download.”USPS original A customer can use the feeds for reconciliation and for internal or external reporting.USPS Returns User Guidepage 18“The data feeds can be used for any reconciliation and internal/external reporting.”USPS original
Four data feeds carry USPS Returns data:USPS Returns User Guidepage 10“The following data feeds will be available (See Table 2 for data field details):”USPS original
- Package Platform – Pricing ScanUSPS Returns User Guidepage 10“Package Platform – Pricing Scan”USPS original
- Package Platform – Final NotificationUSPS Returns User Guidepage 10“Package Platform – Final Notification”USPS original
- EPS – USPS Returns TransactionsUSPS Returns User Guidepage 10“EPS – USPS Returns Transactions”USPS original
- EPS – Transaction SummaryUSPS Returns User Guidepage 10“EPS – Transaction Summary”USPS original
Data delegation in IV-MTR lets a user see another CRID's data or share data with another CRID.USPS Returns User Guidepage 10“In addition to visibility into their own CRID(s), users can request data visibility from or provide data visibility to another CRID through the data delegation functionality available in IV-MTR (See Figures 6 & 7).”USPS original
Scan event extracts stay available through Product Tracking and Reporting.USPS Returns User Guidepage 10“In addition to the Package Platform Reporting available through IV-MTR, USPS Returns customers will continue to have access to the existing scan event extracts available through Product Tracking and Reporting (PTR).”USPS original A customer receives those scan events through Parcel Data Exchange, in the Business Customer Gateway.USPS Returns User Guidepage 12“A customer receives scan events through Parcel Data Exchange (PDX) which is accessible through the BCG.”USPS original
The data dictionary
The USPS Returns/Package Platform data dictionary lists each package's fields by the names IV-MTR shows.USPS Returns User Guidepage 14“USPS RETURNS®/PACKAGE PLATFORM DATA DICTIONARY … IV Display Name”USPS original
| Field | What it holds |
|---|---|
| IMPB | The package's Intelligent Mail package barcode.USPS Returns User Guidepage 14“Intelligent Mail Package Barcode”USPS original |
| PIC | The package's Package Identification Code.USPS Returns User Guidepage 14“Package Identification Code”USPS original |
| Service Type Code | The mail class and any extra services.USPS Returns User Guidepage 14“Represents both the mail class and any extra service(s) for a package or item being shipped”USPS original |
| Mailer ID | The Mailer ID used on the package.USPS Returns User Guidepage 14“Mailer ID used on the package”USPS original |
| Origin ZIP Code, Destination ZIP Code | The package's origin and destination ZIP Codes.USPS Returns User Guidepage 14“Origin Zip code … Destination ZIP code for the package”USPS original |
| Weight, Dimensions | The weight captured on the package, and its dimensions.USPS Returns User Guidepage 14“Captured weight on the package … Dimensions on the package”USPS original |
| Pricing Scan Completion Date/Time | When USPS assessed the price.USPS Returns User Guidepage 14“Date time when pricing was assessed”USPS original |
| EPS Account Number | The Enterprise Payment System account number.USPS Returns User Guidepage 14“Enterprise Payment services account number”USPS original |
| Price Type | The mail class, product and their attributes.USPS Returns User Guidepage 14“Defines mail class, product and associated attributes”USPS original |
| NSA Contract Number | The Negotiated Service Agreement contract number.USPS Returns User Guidepage 14“Negotiated service agreement contract number”USPS original |
| Base Price | The published price, without contract pricing.USPS Returns User Guidepage 14“Published pricing, does not include contract pricing”USPS original |
| Extra Service Amount | The price assessed for the package's extra services.USPS Returns User Guidepage 15“Price assessed for the extra service(s) that was/were used in conjunction with package”USPS original |
| Total Postage | The total postage assessed on the package, extra services included.USPS Returns User Guidepage 15“Total postage assessed on the package, includes extra services”USPS original |
| Assessed Rate Type, Assessed mail class Name, Assessed Zone | The rate type, mail class and zone USPS assessed, which could differ from what the mailer claimed.USPS Returns User Guidepage 15“Rate type that was assessed on the package by USPS, could be different from what was initially claimed by the mailer … Mail Class that was assessed on the package by USPS, could be different from what was initially claimed by the mailer … Zone that was assessed on the package by USPS, could be different from what was initially claimed by the mailer”USPS original |
| Assessed Piece Weight Value, Assessed Piece Dimensions Length, Height and Width | The weight and dimensions USPS assessed, which could differ from what the mailer claimed.USPS Returns User Guidepage 16“Piece weight that was assessed on the package by USPS, could be different from what was initially claimed by the mailer … Piece dimension for length that was assessed on the package by USPS, could be different from what was initially claimed by the mailer … Piece dimension for height that was assessed on the package by USPS, could be different from what was initially claimed by the mailer”USPS originalUSPS Returns User Guidepage 17“Piece dimension for width on the package by USPS, could be different from what was initially claimed by the mailer”USPS original |
In the USPS Returns phase, the assessed values do not differ from what the mailer claimed.USPS Returns User Guidepage 15“Rate type that was assessed on the package by USPS, could be different from what was initially claimed by the mailer … Note: The assessed values will not be different for USPS Returns phase”USPS original
Rules
USPS Returns customers must use the enrolled MIDs and approved STCs when creating their USPS Returns labels.USPS Returns User Guidepage 4“USPS Returns customers must use the enrolled MIDs and approved STCs when creating their USPS Returns labels.”USPS original
A returns customer must print only its enrolled Mailer IDs and approved service type codes on its USPS Returns labels.
A MID/STC combination can only be active in either Scan Based Payment (SBP) or USPS Returns, but not both.USPS Returns User Guidepage 3“A MID/STC combination can only be active in either Scan Based Payment (SBP) or USPS Returns, but not both.”USPS original
A Mailer ID and service type code pair must not be active in both Scan Based Payment and USPS Returns.
When transitioning a Mailer ID from SBP to USPS Returns, mailers must transition all Service Type Codes.USPS Returns User Guidepage 3“When transitioning a Mailer ID from SBP to USPS Returns, mailers must transition all Service Type Codes.”USPS original
A mailer moving a Mailer ID from Scan Based Payment to USPS Returns must move all of its service type codes.
The serial number in the IMpb must be unique for 120 days.USPS Returns User Guidepage 12“The serial number in the IMpb must be unique for 120 days.”USPS original
The serial number in a USPS Returns IMpb must not repeat within 120 days.
USPS Returns labels must use one of the following label constructs:USPS Returns User Guidepage 5“USPS Returns labels must use one of the following label constructs:”USPS original
A USPS Returns label must use the C01 or the C05 Commercial Mail Construct.USPS Returns User Guidepage 5“C01 – Commercial Mail Construct … C05 – Commercial Mail Construct”USPS original
Privately printed labels must be certified by the National Customer Support Center (NCSC).USPS Returns User Guidepage 4“Privately printed labels must be certified by the National Customer Support Center (NCSC).”USPS original
A label the customer prints itself must be certified by the National Customer Support Center.
All other customers, including those using MRS, must transition to the new automated USPS Returns label design.USPS Returns User Guidepage 12“All other customers, including those using MRS, must transition to the new automated USPS Returns label design.”USPS original
Every customer except those on Scan Based Payment labels must move to the USPS Returns label design, including Merchandise Return Service customers.
If the MID(s) is linked to a Negotiated Service Agreement (NSA)/ Commercial Plus™ Pricing (CPP) Authorization, the USPS Returns customer must provide contract numbers associated to that MID.USPS Returns User Guidepage 3“If the MID(s) is linked to a Negotiated Service Agreement (NSA)/ Commercial Plus™ Pricing (CPP) Authorization, the USPS Returns customer must provide contract numbers associated to that MID.”USPS original
A customer whose Mailer ID has a Negotiated Service Agreement or Commercial Plus Pricing authorization must give USPS the contract numbers for that Mailer ID.
What goes wrong
A returns customer is responsible for every processed package with its Mailer ID in the IMpb.USPS Returns User Guidepage 12“USPS Returns customers are responsible for payment for all processed packages with their MID in the IMpb.”USPS original USPS collects through its normal accounts receivable process and can refer a case to the Inspection Service.USPS Returns User Guidepage 12“USPS will handle collections through the normal accounts receivable process and if necessary will refer to the Inspection Service for review.”USPS original
USPS Returns detects duplicate labels in the mail stream.USPS Returns User Guidepage 12“USPS has built duplicate label detection into USPS Returns.”USPS original For each duplicate, USPS charges the EPS account the customer's average or default postage.USPS Returns User Guidepage 12“Whenever a duplicate label is detected in the mail stream the associated EPS account will be charged based on the USPS Returns customer’s Average or Default Postage.”USPS original
A package that never crosses mail processing equipment is still priced from employees' physical scans, such as the delivery scan.USPS Returns User Guidepage 12“All physical scans performed by USPS employees are included in package processing to include retail and hand-held devices (i.e. Deliver scan Event Code 01).”USPS original When equipment can't read the IMpb, USPS keys it in by hand at delivery.USPS Returns User Guidepage 12“USPS will manually key in IMpb on hand-held devices at point of delivery (Deliver scan Event Code 01).”USPS original
A legacy Merchandise Return Service label, one without an IMpb, stays in the manual workflow.USPS Returns User Guidepage 12“Legacy MRS labels will continue being processed/billed through the manual MRS workflow (shipper’s local payment account or CAPS account is billed in PostalOne!).”USPS original Postage due units bill it to the customer's local MRS account or its MRS account linked to CAPS.USPS Returns User Guidepage 17“To ensure legacy Merchandise Return Service (MRS) customers are charged properly: Postage Due Units should continue to bill customers who use legacy MRS labels through the customer’s locally funded MRS account or MRS account linked to CAPS.”USPS original
A package over 70 pounds is nonmailable and is held for pickup with a fee.USPS Returns User Guidepage 13“The postal service maximum mail piece weight limit is 70 pounds. … Any item exceeding the 70-pound maximum is nonmailable, and if found in the postal network, must be secured for pick-up by the mailer or addressee and assessed a fee.”USPS original Unless it is picked up where it was entered, the overweight item fee is $100 per item.USPS Returns User Guidepage 13“Except for items discovered and picked up at the same facility where they were entered, the overweight item fee of $100 will be assessed per item and be made within 14 calendar days or it will be considered abandoned and disposed of at the discretion of the Postal Service.”USPS original An item not claimed within 14 calendar days is considered abandoned.USPS Returns User Guidepage 13“Except for items discovered and picked up at the same facility where they were entered, the overweight item fee of $100 will be assessed per item and be made within 14 calendar days or it will be considered abandoned and disposed of at the discretion of the Postal Service.”USPS original
A USPS unit that gets several nonmachinable returns, or packages that look shortpaid, emails uspsreturns@usps.gov.USPS Returns User Guidepage 13“USPS unit should send email to uspsreturns@usps.gov.”USPS original The email includes photographs of the label and the package's weight or dimensions.USPS Returns User Guidepage 13“Email should include a photograph(s): of the package label. … Please include weight and/or dimensions of package.”USPS original
A shipper disputes a charge in the Parcel Review and Dispute Application.USPS Returns User Guidepage 12“On the Parcel Review and Dispute Application page they can then submit package level disputes”USPS original
- The shipper logs in to the Business Customer Gateway.USPS Returns User Guidepage 12“Shipper should log in to the BCG”USPS original
- The shipper opens the Shipping Services tab.USPS Returns User Guidepage 12“Navigate to the Shipping Services Tab”USPS original
- The shipper opens the Parcel Review and Dispute Application.USPS Returns User Guidepage 12“Navigate to the Parcel Review and Dispute Application”USPS original
- The shipper submits package-level disputes on that application's page.USPS Returns User Guidepage 12“On the Parcel Review and Dispute Application page they can then submit package level disputes”USPS original
Terms
- Mailer IdentifierMID, Mailer IDs, Mailer Identification, Mailer Identification Number, USPS Mailer ID
- MID is a unique 6- or 9-digit number that identifies the mailer or the mailer’s client.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 474“MID is a unique 6- or 9-digit number that identifies the mailer or the mailer’s client.”USPS original
- Service Type CodeSTC
- Service Type Codes are designators used to represent USPS classes of mail in conjunction with the type of Extra Service(s) being requested.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 476“Service Type Codes are designators used to represent USPS classes of mail in conjunction with the type of Extra Service(s) being requested.”USPS original
- Intelligent Mail Package BarcodeIMpb
- An IMpb is the USPS-developed barcode that can be read by automated parcel-processing equipment and scanning devices and consists of a data string that generally follows the GS1-128 specification.IMpb/IMmb Electronic File Transmission RequirementsPDF page 1“An IMpb is the USPS-developed barcode that can be read by automated parcel-processing equipment and scanning devices and consists of a data string that generally follows the GS1-128 specification.”USPS original
- Customer Registration IDCRID, Customer Registration Identification Number, Customer Registration Identifier, Customer Identifier, Customer Reference ID, Customer Registration Identifications
- a USPS-generated numeric code of up to 15 digits that uniquely identifies a business at a specific locationCRID ManagementPDF page 1“a USPS-generated numeric code of up to 15 digits that uniquely identifies a business at a specific location”USPS original
- Enterprise Payment SystemEPS, Electronic Payment System, EPS system, Enterprise System
- allows customers to pay for Postal products and services through a single account, called the Enterprise Payment Account (EPA).Enterprise Payment System (EPS) Account Creation Fact Sheet - August 2024PDF page 1“allows customers to pay for Postal products and services through a single account, called the Enterprise Payment Account (EPA).”USPS original
- Business Customer GatewayBCG, BCG (Business Customer Gateway)
- where shippers can manage their mailing activityPublication 205 Electronic Verification System (eVS®) Business and Technical Guidepage 21“where shippers can manage their mailing activity”USPS original
- USPS ShipPPC, Package Platform Concept, Package Platform
- The USPS payment and verification platform for outbound packages is called USPS Ship. This platform provides reporting, pricing and visibility as packages move through the mail stream.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 31“The USPS payment and verification platform for outbound packages is called USPS Ship. This platform provides reporting, pricing and visibility as packages move through the mail stream.”USPS original
- Shipping Services FileSSF, Shipping Service Files
- The electronic file containing all manifest and payment information.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 474“The electronic file containing all manifest and payment information.”USPS original
- Informed Visibility Mail Tracking & ReportingIVMTR, IV, MTR, IV Mail Tracking & Reporting, Informed Visibility - Mail Tracking and Reporting, Informed Visibility (IV) Mail Tracking & Reporting
- provides near real-time tracking information for all letters, flats, and mail aggregates, which includes containers, handling units, and bundles – giving mailers visibility into their mailings and service, increasing the value of mail and enabling mailers to plan their mailings, measure success of each mailing campaign, and efficiently staff.IV-MTR API Developer ToolkitPDF page 3“provides near real-time tracking information for all letters, flats, and mail aggregates, which includes containers, handling units, and bundles – giving mailers visibility into their mailings and service, increasing the value of mail and enabling mailers to plan their mailings, measure success of each mailing campaign, and efficiently staff.”USPS original
- Product Tracking and ReportingPTR, PTS, Product Tracking and Reporting system, Product Tracking Reporting, Product Tracking and Reporting (PTR) system, Product Tracking System
- Each time a mailer submits a Shipping Services File, PTR processes and edits the file.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 66“Each time a mailer submits a Shipping Services File, PTR processes and edits the file.”USPS original
- Parcel Data ExchangePDX, Parcel Data Exchange (PDX) API, Package Data Exchange
- a web and Application Programming Interface (API) based application that provides the capability for customers to send manifest files to the United States Postal Service® (USPS®) and receive outbound files from USPS, pertaining to domestic and international parcel shipmentsParcel Data Exchange (PDX) API Customer Guidepage 6“a web and Application Programming Interface (API) based application that provides the capability for customers to send manifest files to the United States Postal Service® (USPS®) and receive outbound files from USPS, pertaining to domestic and international parcel shipments”USPS original
Documents
Technical Specifications
- Enterprise Payment System IV-MTR Data ElementsJune 27, 2025
User Guides
- USPS Returns User GuideOctober 11, 2019
Fact Sheets
- USPS Returns Fact SheetNovember 4, 2019
Data Files
- USPS Ship Data DictionarySeptember 28, 2026
Contacts
The Mailing and Shipping Solution Center enrolls customers, at 1-877-672-0007.USPS Returns User Guidepage 3“Contact the USPS Mailing and Shipping Solution Center at 1-877-672-0007 (1-877-MRC-0007).”USPS original It also takes requests for the Cloud Tool API label option.USPS Returns User Guidepage 4“USPS has a Cloud Tool Application Interface (API) label option that can be requested by contacting the USPS Mailing & Shipping Solution Center at 1-877-672-0007.”USPS original
Confirmation Services handles label certification, at 1-877-264-9693, option 5.USPS Returns Fact SheetPDF page 1“Confirmation Services (Label certification) Call: 1-877-264-9693 Option 5”USPS original
Sample labels for certification go to NCSC-Confirmation Services Support, 225 N Humphreys Blvd. STE 501, Memphis TN 38188-1001.USPS Returns User Guidepage 4“Shipper must send 10 sample labels and PS Form 5052, Printer Certification Submission (https://about.usps.com/forms/ps5052.pdf) to: … NCSC-Confirmation Services Support, 225 N Humphreys Blvd. STE 501, Memphis TN 38188-1001.”USPS original
USPS units send reports of nonmachinable or shortpaid returns to uspsreturns@usps.gov.USPS Returns User Guidepage 13“USPS unit should send email to uspsreturns@usps.gov.”USPS original
IV-MTR enrollment instructions are at https://postalpro.usps.com/InformedVisibility/ApplyForAccess.USPS Returns User Guidepage 9“First time users can enroll in the IV-MTR service through the BCG; complete enrollment instructions are provided on PostalPro: https://postalpro.usps.com/InformedVisibility/ApplyForAccess.”USPS original
Sources
- USPS Returns User GuideUSPS original
- Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment SystemsUSPS original
- PostalPro: USPS ReturnsUSPS original
- USPS Returns Fact SheetUSPS original
- Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb), Effective June 24, 2026USPS original
- Intelligent Mail® Package Barcode (IMpb) SpecificationUSPS original
- PTR Domestic Scan Events and DescriptionsUSPS original
- IMpb/IMmb Electronic File Transmission RequirementsUSPS original
- CRID ManagementUSPS original
- Enterprise Payment System (EPS) Account Creation Fact Sheet - August 2024USPS original
- Publication 205 Electronic Verification System (eVS®) Business and Technical GuideUSPS original
- IV-MTR API Developer ToolkitUSPS original
- Parcel Data Exchange (PDX) API Customer GuideUSPS original