Steps to creating your Intelligent Mail
®
Barcode
The Intelligent Mail barcode is a 65-bar Postal Service
™
barcode used to sort and track letters and flats. It allows
mailers to use a single barcode to participate in multiple Postal Service programs simultaneously, expands mailers’
ability to track individual mailpieces, and provides greater mail stream visibility.
The Intelligent Mail barcode can be applied on Priority Mail
®
pieces,
First-Class
Mail
®
pieces,
Standard Mail
®
pieces,
Periodicals, letters and flats, and Bound
Printed Matter flats. The Intelligent Mail barcode can be used for IMb Tracing
®
service, and it can be used for address correction services: manual address
correction notices, ACS
™
, OneCode ACS
®
,
and Intelligent Mail Full-Service
ACS
™
. IMb Tracing
®
service provides information about when and where the
Postal Service sorts a mailpiece on mail-processing equipment. Traditional ACS,
OneCode ACS, and Full-Service ACS provide mailers with electronic address-
correction information when a mailpiece cannot be delivered as addressed.
STEP 1: DOWNLOAD AND INSTALL THE ENCODER AND FONT
The Intelligent Mail barcode consists of a 20-digit tracking code (Barcode
Identifier, Service Type Identifier, Mailer Identifier, and Serial Number) and a
Routing Code (ZIP Code
™
) field of up to 11 digits. An encoder is required to
convert the digits into a 65-character string representing the bars of the IMb
®
tracking code, and a special font is required to convert the 65-character string into
the IMb
®
tracking code itself. Users can download a library of IMb tracking code fonts and computer source code from
the Fonts and Encoders Download page at ribbs.usps.gov. The Intelligent Mail Barcode Resource Download page on
RIBBS provides many useful links and answers to frequently asked questions.
STEP 2: APPLY FOR A MAILER IDENTIFIER
A Mailer Identifier (Mailer ID or MID) is required for the IMb
®
tracking code. New Mailer IDs are assigned through
centralized USPS
®
processes, generally through the Mailer ID system at gateway.usps.com (Business Customer
Gateway). Refer to the User Access to Electronic Mailing Information and Reports Guide on RIBBS for step-by-step
instructions for using the Mailer ID system. Mail owners and mail preparers will be assigned their six- or nine-digit MIDs
based on criteria established by the Postal Service. For the RIBBS web site, go to https://ribbs.usps.gov/index.
cfm?page=mailingpromotions. The Intelligent Mail Mailer ID Application page on the RIBBS
®
site explains the few
exceptions to using the Business Customer Gateway to obtain new Mailer IDs, such as when requesting multiple Mailer
IDs or Mailing Agents acting on behalf of Mail Owners.
STEP 3: POPULATE THE BARCODE FIELDS
The five IMb fields are the Barcode Identifier, the Service Type Identifier, the Mailer ID, the Serial Number, and the
Routing Code (ZIP Code). The Barcode Identifier field should be “00” (zero-zero) with one exception: automation-price
eligible flat mail bearing a printed optional endorsement line (OEL). When mailers prepare flat-size pieces using IMb
®
tracking codes to meet automation-price eligibility requirements, the IMb
®
tracking codes on any pieces bearing printed
OELs must contain the Barcode Identifier corresponding to the printed OEL used. See the Barcode ID Reference Table
on RIBBS
®
to determine the correct Barcode Identifier.
The attributes that determine which Service Type Identifier (STID) should appear in an IMb
®
tracking code are the
class of mail, the ACS service desired, and whether IMb Tracing service is desired. See the Service Type ID Reference
Table on the RIBBS site to determine the correct Service Type Identifier.
The Mailer Identifier (MID) is explained in Step 2, above. All Intelligent Mail
®
barcodes must contain a valid MID,
except in the case of Origin IMb Tracing barcodes, where the Mailer ID and Serial Number fields are combined to
provide the full 15 digits for customer use.
Information about OneCode ACS is available in
Publication 8b, OneCode ACS Technical Guide.
Information on IMb Tracing is available in the
IMb Tracing User Guide. Users should also read
A Guide to Intelligent Mail for Letters and Flats,
which provides in-depth information about the
Intelligent Mail program. For information about
address quality, go to: https://www.usps.com/
business/manage-address-quality.htm.
Once the encoder and font are installed,
verify the print quality by producing samples,
as instructed in the encoder package.
The Intelligent Mail Barcode Specification
USPSB-3200 and The Intelligent Mail Barcode
Technical Resource Guide provide extensive
technical information about Intelligent Mail
barcodes.
(continued on back)