Used since 2007, the USPS Intelligent Mail Barcode is mandatory for companies looking for greater mail discounts.
Syntax for data:
barcode ID (2-digit), Special Service (3-digit), Mailer ID (6-digit), Serial number (9-digit), Delivery Point zip code (0, 5, 9 or 11-digit)
Example:
05,987,978425,684745129,92130
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