USPS Intelligent Mail Barcode

What is the Intelligent Mail Barcode

The Intelligent Mail Barcode is a 65-bar U.S. Postal Service barcode designed for bulk mailers to track and sort mailpieces such as flats and letters. Two versions of the Intelligent Mail Barcode are available — Basic Service and Full Service. Basic Service is easy to implement and offers tracking and sorting capabilities. Full Service offers additional capabilities and benefits such as greater postage discounts, advanced tracking and free address correction services.

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How to use the USPS Intelligent Mail Barcode?

USPS Intelligent Mail Barcodes must be generated by a software or hardware solution approved by the U.S. Postal Service. Once you select a solution, you must obtain a USPS Mailer ID which will be unique to you. You can obtain your Mailer ID through the USPS Business Customer Gateway where you’ll create an account, log in, and activate your Intelligent Mail Barcode services. Lastly, you must sync your Intelligent Mail Barcode services with your mailing and shipping solution. After completion, you'll have the ability to print Intelligent Mail Barcodes for your mailpieces.

Bulk mailers and shippers who print the Intelligent Mail Barcodes on their shipping labels receive discounts on the following USPS mail classes and types:

  • First-Class Mail letters and flats.
  • Standard mail letters and flats.
  • Periodical letters and flats.
  • Bound printed matter flats.
  • Business and permit reply mail.

Using USPS Intelligent Mail Barcode with Stamps.com

Stamps.com has built-in capabilities to print the USPS Intelligent Mail Barcode directly onto your letter or shipping label. These capabilities eliminate the need to manually obtain a USPS Mailer ID or create an account through USPS Business Customer Gateway. Using the software, Stamps.com customers can print Intelligent Mail Barcodes onto all types of letters and packages.


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Every new customer account starts with:

  • Free 5 lb. Digital Scale*, connects via USB
  • 4-week trial
  • $5 in USPS postage to use in trial period
  • Free Supplies Kit including postage labels
  • Additional $10 postage coupons to use after trial
  • Only $15.99 per month, including the first month if you stay past the 4-week trial
    *pay only S&H fee