Intelligent Mail
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Barcode Xpress 9 for .Net - User Guide > Concepts > Barcode Specifications > Barcode Types > Intelligent Mail

Glossary Item Box

The Intelligent Mail Barcode is also known as the USPS OneCode Solution or USPS 4-State Customer Barcode (abbreviated 4CB, 4-CB, or USPS4CB). This barcode is adopting a new 4-state 1D barcode that includes more address information than the current code. A sample is shown below. Further information can be found at the USPS Web site:

The Intelligent Mail barcode combines information currently found in the PostNet and Planet barcodes. The length of the barcode is fixed at 65 bars. It also contains a CRC-Checksum for verifying the barcode value. There is no error correction. The output of the barcode is a 20, 25, 29, or 31 digit string (0, 5, 9, or 11 digit zip code) containing the following data:

(© USPS-B-3200,Pages 4-5,file:SPUSPS-B3200B001.pdf)


The Mailer ID is a field within the Intelligent Mail barcodes that is used to identify Mail Owners and/or Mailing Agents. The IDs are assigned by the USPS to each Mail Owner and/or Mailing Agent that requests them. A Mailer ID can be a 9-digit field or a 6-digit field. The USPS assigns 6-digit or 9-digit Mailer IDs based upon the mail volume of the mailer.

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