Product Tracking and Reporting (PTR)
Product Tracking and Reporting is the USPS database that stores tracking scan data for all barcoded packages and extra services products.PostalPro: Product Tracking and Reporting (PTR)“Product Tracking and Reporting (PTR) is the database that stores tracking scan data for all barcoded packages and extra services products.”USPS original It sends tracking updates to USPS.com, Informed Delivery and external APIs.PostalPro: Product Tracking and Reporting (PTR)“delivering real-time updates to customers via USPS.com, Informed Delivery, and external APIs”USPS original Mailers send it data on each package and get back a scan event extract file and a Confirmation/Error/Warning file.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 18“In return, USPS will provide mailers with two types of files: a scan event extract file and a confirmation/error/warning file.”USPS original
What it is
PTR stores scan events from acceptance all the way to delivery.PostalPro: Product Tracking and Reporting (PTR)“The scan events take place from acceptance all the way to delivery.”USPS original Its data comes from business mailers' files, handheld scanners, retail equipment, mail processing equipment and other Postal systems.PostalPro: Product Tracking and Reporting (PTR)“The tracking information comes from business mailers' files, handheld scanners, retail equipment, mail processing equipment, and many other Postal systems.”USPS original Signature images are also available for applicable products.PostalPro: Product Tracking and Reporting (PTR)“Signature images are also available for applicable products.”USPS original
Business customers receive extract files of tracking events.PostalPro: Product Tracking and Reporting (PTR)“Extract files are sent to business customers to supply them with tracking events.”USPS original Individual customers use the USPS Tracking website to check delivery status and request proof of delivery or email notification.PostalPro: Product Tracking and Reporting (PTR)“The USPS Tracking website is also available to individual customers to check the delivery status of their items and request proof of delivery or e-mail notification, when applicable.”USPS original
PTR also processes and edits each Shipping Services File a mailer submits.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 A Shipping Services File is 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
USPS is moving PTR to a modernized platform, PTR2.PostalPro: Product Tracking and Reporting (PTR)“PTR is being modernized to deliver a best-in-class visibility solution for customers.”USPS original PTR2 is designed for improved availability and performance with less latency and downtime.PostalPro: Product Tracking and Reporting (PTR)“The new platform, PTR2, has been designed to provide improved availability and performance with decreased latency and downtime.”USPS original
How it works
- The mailer transmits its Shipping Services File to PTR over a secure protocol.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 70“Customers must transmit their Shipping Services Files to PTR using one of the following communication protocols:”USPS original
- PTR processes and edits the file against USPS specifications.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
- PTR returns a Confirmation/Error/Warning file on the processing of each record.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 18“The confirmation/error/warning file contains information regarding the processing of Shipping Services File records by the Product Tracking and Reporting system (PTR).”USPS original
- Scanners, retail terminals and processing equipment capture events from label creation to delivery.PostalPro: Product Tracking and Reporting (PTR)“PTR captures tracking events continuously from label creation to final delivery, aggregating data from a variety of sources including mailer data, handheld scanners, retail terminals, and mail processing equipment.”USPS original
- USPS sends the mailer a scan event extract file with every scan on its packages.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 67“This file contains every scan event that occurs on every package that the mailer included in the Shipping Services file.”USPS original
- The events also appear on USPS Tracking, the USPS mobile app and the USPS Tracking API.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 67“the event information will then be available to customers on the USPS Tracking Web site, through the USPS mobile application or the USPS Tracking API.”USPS original
The regular schedule sends the scan event extract file 16 times a day, and the premium schedule sends it 96 times a day.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 476“they can receive the scan event extract file either 16 times daily (regular schedule) or 96 times daily (premium) schedule.”USPS original
Getting tracking data
PTR and PTR2 give customers their data through four channels.PostalPro: Product Tracking and Reporting (PTR)“Customers can receive data from PTR and PTR2 through the following channels:”USPS original
- The Tracking API, version 3.0 for PTR and version 3.2 for PTR2.PostalPro: Product Tracking and Reporting (PTR)“• Tracking API (PTR v3.0, PTR2 v3.2) • Webhooks (PTR v3.0, PTR2 v3.2) • Scan Event Extracts • Notifications (email and text message)”USPS original
- Webhooks, in the same two versions.PostalPro: Product Tracking and Reporting (PTR)“• Tracking API (PTR v3.0, PTR2 v3.2) • Webhooks (PTR v3.0, PTR2 v3.2) • Scan Event Extracts • Notifications (email and text message)”USPS original
- Scan Event Extracts.PostalPro: Product Tracking and Reporting (PTR)“• Tracking API (PTR v3.0, PTR2 v3.2) • Webhooks (PTR v3.0, PTR2 v3.2) • Scan Event Extracts • Notifications (email and text message)”USPS original
- Notifications by email and text message.PostalPro: Product Tracking and Reporting (PTR)“• Tracking API (PTR v3.0, PTR2 v3.2) • Webhooks (PTR v3.0, PTR2 v3.2) • Scan Event Extracts • Notifications (email and text message)”USPS original
A user reaches the Tracking API by creating an app on the USPS developer portal.PTR2 FAQsPDF page 5“create an app on the developer portal to get access to USPS APIs”USPS original The app gives the user a key and secret, which every API call needs.PTR2 FAQsPDF page 5“You will need this combination to access our APIs in any form.”USPS original The limit on calls per hour applies to the application, not to the CRID or auth token.PTR2 FAQsPDF page 5“The number of API calls per hour is enforced at an application level, not at the CRID or auth token level.”USPS original
USPS encourages customers to move from flat file extracts to a Webhook that gives more real-time tracking updates.PTR2 FAQsPDF page 6“Customers are encouraged to migrate from flat file extracts to a new Webhook that will provide a more real-time solution for tracking updates.”USPS original The default format of the scan event file is version 1.5.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 67“The default format for the scan event file is version 1.5.”USPS original A customer who wants version 1.6 or 2.0 contacts the Confirmation Services Support Team.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 67“To request version 1.6 or version 2.0 customer must contact the Confirmation Services Support Team at 877-264-9693 to have the scan version number set.”USPS original
Scan events
USPS lists each domestic scan event with its event code and the scripting customers see on USPS.com.PTR Domestic Scan Events and DescriptionsPDF page 1“External (USPS.com) First Level Scripting”USPS original
Domestic scan events in the Delivered status category. The filters show the other categories and the events that start or stop the clock.
| Event | Attribute | Extract description | USPS.com wording | Status category | Starts the clock | Stops the clock |
|---|---|---|---|---|---|---|
| 01 | DELIVERED | Delivered | Delivered | No | Yes | |
| 01 | 01 | DELIVERED IN/AT MAILBOX | Delivered, In/At Mailbox | Delivered | No | Yes |
| 01 | 02 | DELIVERED FRONT DOOR/PORCH | Delivered, Front Door/Porch | Delivered | No | Yes |
| 01 | 03 | DELIVERED PARCEL LOCKER | Delivered, Parcel Locker | Delivered | No | Yes |
| 01 | 04 | DELIVERED LEFT WITH INDIVIDUAL | Delivered, Left with Individual | Delivered | No | Yes |
| 01 | 05 | DELIVERED FRONT DESK/RECEPTION/ MAILROOM | Delivered, Front Desk/Reception/Mail Room | Delivered | No | Yes |
| 01 | 06 | DELIVERED GARAGE/OTHER DOOR/OTHER LOC | Delivered, Garage or Other Location at Address | Delivered | No | Yes |
| 01 | 07 | DELIVERED NEIGHBOR AS REQUESTED | Delivered, Neighbor as Requested | Delivered | No | Yes |
| 01 | 08 | DELIVERED PO BOX | Delivered, PO Box | Delivered | No | Yes |
| 01 | 09 | DELIVERED INDIVIDUAL PICKED UP AT USPS | Delivered, Individual Picked Up at Postal Facility | Delivered | No | Yes |
1 to 10 of 22 codes in the PTR Domestic Scan Events, October 2026.
USPS publishes a separate list of PTR2 domestic scan events, dated April 2026.PTR2 Domestic Scan Events and DescriptionsPDF page 1“PTR2 USPS DOMESTIC TRACKING SCAN EVENTS - April 2026”USPS original Some event scripts differ, and some events exist in one system but not the other.PTR2 FAQsPDF page 3“These differences include changes in scripts for some events that will be present in one system but not the other.”USPS original PTR2 retires three events across tracking channels.PTR2 FAQsPDF page 2“The following events are being retired across tracking channels: NT (In Transit to Next Facility), EF (Departed USPS Facility), LX (Processing Exception).”USPS original One of them is the departure scan from a USPS facility:
PTR Domestic Scan Events, October 2026, EFPTR Domestic Scan Events and DescriptionsPDF page 15EventEFExtract descriptionDEPART USPS FACILITYUSPS.com wordingDeparted USPS FacilityStatus categoryIn TransitWhat it meansSortation process at the distribution facility is complete; the item is being dispatched on the next available transportation to the next processing facility or the destination delivery unitStarts the clockNoStops the clockNoUSPS original
- Event
- EF
- Extract description
- DEPART USPS FACILITY
- USPS.com wording
- Departed USPS Facility
- Status category
- In Transit
- What it means
- Sortation process at the distribution facility is complete; the item is being dispatched on the next available transportation to the next processing facility or the destination delivery unit
The Confirmation/Error/Warning file
The Confirmation/Error/Warning file is PTR's report on the records of each Shipping Services File.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 18“The confirmation/error/warning file contains information regarding the processing of Shipping Services File records by the Product Tracking and Reporting system (PTR).”USPS original When data does not meet USPS specifications, PTR generates an error or a warning.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 66“When data does not meet USPS specifications, PTR generates an error or a warning.”USPS original The file comes as a human-readable report or as a data file.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 66“format (human-readable file) or a”USPS original
The first letter of each message line says what happens to the record:
- An
Eline whose text does not start withFAILmeans the record is rejected.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 66“then record will be rejected”USPS original - An
Eline whose text starts withFAILmeans the record is loaded, and a corrections file is required.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 66“then the record will be loaded and a corrections file will be required”USPS original - A
Wline means the record is posted.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 66“indicates this is a Warning Message and the record will be posted”USPS original
A record that fails the edits for a required field is rejected as an error.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 78“Records that fail the edits for a required field are rejected as errors.”USPS original A record that fails the edits for a non-required field is listed as a warning but is still stored.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 78“Records that fail the edits for non-required fields are listed as warnings but are processed and stored.”USPS original PTR2 returns the file in the same format with the same information.PTR2 FAQsPDF page 4“the Confirmation/Error/Warning (CEW) will still be returned in the same format with the same information.”USPS original
PTR2
The way mailers submit manifest data does not change with PTR2.PTR2 FAQsPDF page 4“outlined in the Publication 199 (Pub 199) will not change.”USPS original PTR2 does not accept Shipping Services File versions 1.3, 1.4 and 1.5.PTR2 FAQsPDF page 2“Shipping Services file versions 1.3, 1.4 and 1.5 will no longer be accepted in PTR2.”USPS original It also does not accept Shipping Partner file versions 2.0 and 3.0.PTR2 FAQsPDF page 2“Shipping Partner files versions 2.0 and 3.0 will no longer be accepted in PTR2.”USPS original
The original PTR runs in parallel with PTR2 until customer migration is complete.PTR2 FAQsPDF page 3“The current PTR solution will run in parallel until customer migration to the new platform is completed.”USPS original USPS has not set a retirement date for the original PTR.PTR2 FAQsPDF page 3“Retirement of the current PTR system is TBD”USPS original The retirement date for the WebTools platform was January 2026.PTR2 FAQsPDF page 3“the retirement date for the WebTools platform is January 2026.”USPS original
Since June 2025, the PTR Tracking API gives no package origin and destination details.PTR2 FAQsPDF page 3“As of June 2025, package origin and destination details are no longer available in the PTR Tracking API”USPS original USPS.com and Informed Delivery still use the v3 API, so their messages and events can differ from v3r2.PTR2 FAQsPDF page 3“Other tracking channels, like USPS.com and Informed Delivery, that are still using the official system of record v3 API will have some different messaging, information and sometimes events than v3r2.”USPS original
Rules
Customers must transmit their Shipping Services Files to PTR using one of the following communication protocols:Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 70“Customers must transmit their Shipping Services Files to PTR using one of the following communication protocols:”USPS original
A mailer must send its Shipping Services File to PTR by SFTP, by EDIINT AS2 or through Parcel Data Exchange. No other way of sending the file is allowed.
Customers must not repeat (duplicate) serial numbers for Electronic File Numbers used in Header Records or Package Identification Codes (PICs) used in D1 Records for 120 days from date of first use.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 78“Customers must not repeat (duplicate) serial numbers for Electronic File Numbers used in Header Records or Package Identification Codes (PICs) used in D1 Records for 120 days from date of first use.”USPS original
A mailer must not reuse an Electronic File Number or a Package Identification Code within 120 days of its first use.
Mailers must review their error/warning files to determine if there are errors or warnings that need to be addressed.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 66“Mailers must review their error/warning files to determine if there are errors or warnings that need to be addressed.”USPS original
A mailer must read each Confirmation/Error/Warning file and find the errors and warnings it has to fix.
Mailers must use versions 1.6, 1.7 or 2.0PTR2 FAQsPDF page 4“Mailers must use versions 1.6, 1.7 or 2.0”USPS original
For PTR2, a mailer must send its Shipping Services File in version 1.6, 1.7 or 2.0.
Corrections should be resubmitted within 24 hours, to ensure receipt of all delivery information.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 78“Corrections should be resubmitted within 24 hours, to ensure receipt of all delivery information.”USPS original
A mailer should send corrected records within 24 hours so that it gets all the delivery information.
During the file certification process, mailers should submit their manifest files to the PTR TEM environmentPublication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 75“During the file certification process, mailers should submit their manifest files to the PTR TEM environment”USPS original
While its files are being certified, a mailer should send its manifest files to the PTR test environment, not to production.
What goes wrong
A rejected record can be corrected and sent to USPS again.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 78“Any record that is rejected as an error can be corrected and re-sent to the USPS.”USPS original The corrections file must use the Electronic File Number of the original file.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 78“The Electronic File Number of the original file containing the records in error must be used in the”USPS original
Duplicate Detail Records 1 within 120 days are charged by USPS Ship as duplicates.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 78“Duplicate Detail Records 1 processed by PTR, whether duplicated within the same file, same manifest or previously manifested within the past 120 days, will be charged by USPS Ship as duplicates as part of the normal automatic postage debiting process.”USPS original Duplicate Header Records that PTR processes may be rejected by USPS Ship.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 78“Duplicate Header Records with the associated Detail Records 1 that are successfully processed by PTR may be rejected by USPS Ship”USPS original USPS Ship customers who send corrections after the 10th of the next month can be charged twice for the same mailpiece.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 78“USPS Ship customers should submit correction files before the end of the reconciliation period (the10th of the subsequent month) to avoid being charged twice for the same mail piece.”USPS original
USPS lists each message PTR can return in its Confirmation/Error/Warning Message List.PTR Error/ Warning Messagespage 1“Product Tracking and Reporting Confirmation/Error/Warning Message List”USPS original For example, CHECK DIGIT ERROR means the check digit in the label number is invalid.PTR Error/ Warning Messagespage 1“The check digit in the label number is invalid.”USPS original
Terms
- 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
- 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
- Confirmation/Error/WarningCEW, confirmation/error/warning file, Confirmation Error Warning (CEW) Report, PTR Confirmation Error/Warning Report
- The confirmation/error/warning file identifies issues associated within the Shipping Services File record.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 18“The confirmation/error/warning file identifies issues associated within the Shipping Services File record.”USPS original
- scan event extract fileCDE, Scan Event Extracts (PTR), Scan Event Extract, Customer Data Extract, Customer Daily Extract
- This file contains every scan event that occurs on every package that the mailer included in the Shipping Services file.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 67“This file contains every scan event that occurs on every package that the mailer included in the Shipping Services file.”USPS original
- Electronic File NumberEFN
- Electronic File Number uniquely identifies the transmission of an electronic manifest, and must be unique for a period of 120-days. It is located in the header record of the Shipping Services File.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 474“Electronic File Number uniquely identifies the transmission of an electronic manifest, and must be unique for a period of 120-days. It is located in the header record of the Shipping Services File.”USPS original
- Package Identification CodePIC, Piece Identification Code
- A Package Identification Code or PIC is a unique data string that serves as a unique tracking number for a mailpiece. Each PIC will consist of an Application Identifier, service type code, data string that will vary based upon the specific data construct, and a MOD 10 check digit.Intelligent Mail® Package Barcode (IMpb) Specificationpage 7“A Package Identification Code or PIC is a unique data string that serves as a unique tracking number for a mailpiece. Each PIC will consist of an Application Identifier, service type code, data string that will vary based upon the specific data construct, and a MOD 10 check digit.”USPS original
- Test Environment for MailersTEM, Testing Environment for Mailers, TEM (Testing Environment for Mailers)
- The Test Environment for mailers (TEM) is a test platform designed to allow mailers to test their ability to submit electronic mailing information such as Full Service (FS) mailings to the Postal Service.PostalPro: Testing Environment for Mailers (TEM) Using Mail.XML“The Test Environment for mailers (TEM) is a test platform designed to allow mailers to test their ability to submit electronic mailing information such as Full Service (FS) mailings to the Postal Service.”USPS original
Documents
Technical Specifications
- PTR Tracking API Specifications and IntegrationMay 21, 2026
Publications
Fact Sheets
FAQs
- USPS PTR2 API Known IssuesSeptember 3, 2026
- PTR2 FAQsDecember 1, 2025
Data Files
- PTR Domestic Scan Events and DescriptionsOctober 19, 2026
- Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)June 24, 2026
- PTR2 Domestic Scan Events and DescriptionsApril 27, 2026
- USPS Reporting ZIP Codes (Locations Using Scanning ZIP Codes not in AMS)October 6, 2025
- PTR2 Event Scripting ChangesJune 11, 2025
- PTR2 Event Scripting Changes (Excel Document)June 11, 2025
- PTR Error/ Warning Messages
Release Notes
- PTR2 Release Notes_DD_10_24_26October 20, 2026
- PTR1 Release Notes_DD_10_17_26October 16, 2026
- PTR2 Release Notes_DD_10_13_26October 7, 2026
- PTR2 Release Notes_DD_09_12_26September 10, 2026
- PTR2 Release Notes_DD_04_23_26April 24, 2026
- PTR2 Release Notes_DD_04_18_26April 17, 2026
- PTR2 Release Notes_DD_04_07_26April 9, 2026
- PTR2 Release Notes_DD_03_12_26March 16, 2026
- PTR2 Release Notes_DD_02_28_26March 2, 2026
- PTR2 Release Notes_DD_02_21_26February 19, 2026
- PTR2 Release Notes_DD_02_12_26February 12, 2026
Contacts
- Questions about PTR2 and its APIs go to PTR2APITesting@usps.gov.PTR2 FAQsPDF page 2“For any questions, please contact PTR2APITesting@usps.gov.”USPS original
- Requests to raise the API call limit go to the Customer Access Team at APISUPPORT@usps.gov.PTR2 FAQsPDF page 5“APISUPPORT@usps.gov. The number of API calls”USPS original
- Technical support for manifest and extract files comes from the Package Services Customer Support Team, delivery.confirmation@usps.gov or 877-264-9693, Option 1.Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systemspage 29“Customer Support Team by email at delivery.confirmation@usps.gov or by phone at 877-264-9693, Option 1.”USPS original
- USPS APIs support takes requests through its web form at https://emailus.usps.com/s/usps-APIs.PTR Tracking API Specifications and IntegrationPDF page 1“https://emailus.usps.com/s/usps-APIs”USPS original
Sources
- PostalPro: Product Tracking and Reporting (PTR)USPS original
- Publication 199: Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment SystemsUSPS original
- PTR2 FAQsUSPS original
- PTR Domestic Scan Events and DescriptionsUSPS original
- PTR2 Domestic Scan Events and DescriptionsUSPS original
- PTR Error/ Warning MessagesUSPS original
- Intelligent Mail® Package Barcode (IMpb) SpecificationUSPS original
- PostalPro: Testing Environment for Mailers (TEM) Using Mail.XMLUSPS original
- PTR Tracking API Specifications and IntegrationUSPS original