USPS Intelligent Mail Barcode Generator
Generate USPS Intelligent Mail barcode artwork for correctly prepared routing and tracking data used in eligible letter and flat mail workflows.
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USPS Intelligent Mail Barcode Generator
Quick answer: The USPS Intelligent Mail barcode, or IMb, is a 65-bar four-state postal barcode used for routing and tracking letter and flat mail.
What USPS Intelligent Mail barcode is
Intelligent Mail uses 65 vertical bars in four states: full bar, ascender, tracker and descender.
When to use USPS Intelligent Mail barcode
Use IMb only for USPS mail workflows that require or permit Intelligent Mail and with correctly prepared mailing data.
Data and validation rules
USPS defines tracking data and an optional routing component. The precise fields and permitted routing length depend on the mailing application.
Standards and governance
Intelligent Mail is governed by USPS Domestic Mail Manual barcode standards and related USPS technical resources. Generating the 65 bars does not assign a Mailer ID, mailing permit, ZIP routing or USPS eligibility.
Printing and scanner testing
Follow USPS dimensions, placement and clear-space requirements and verify production output within the mailing process.
Common mistakes to avoid
Common errors include placeholder tracking data, incorrect routing information, poor bar-state reproduction and incorrect placement.
How USPS Intelligent Mail barcode compares with related formats
No. Intelligent Mail is a different four-state 65-bar system carrying routing and tracking information. POSTNET uses a different legacy structure.
Before you print
- Correct symbology selected
- Identifier ownership confirmed
- Check digit verified
- Quiet zones kept clear
- Strong bar contrast
- Aspect ratio unchanged
- SVG or high-resolution PNG
- Production scanner test
Frequently asked questions
Open a question to read a concise technical answer.
01What is USPS Intelligent Mail barcode?+
The USPS Intelligent Mail barcode, or IMb, is a 65-bar four-state postal barcode used for routing and tracking letter and flat mail.
02When should I use USPS Intelligent Mail barcode?+
Use IMb only for USPS mail workflows that require or permit Intelligent Mail and with correctly prepared mailing data.
03What data can USPS Intelligent Mail barcode encode?+
USPS defines tracking data and an optional routing component. The precise fields and permitted routing length depend on the mailing application.
04What standard or rules apply to USPS Intelligent Mail barcode?+
Intelligent Mail is governed by USPS Domestic Mail Manual barcode standards and related USPS technical resources.
05Does this generator assign or license the underlying identifier?+
Generating the 65 bars does not assign a Mailer ID, mailing permit, ZIP routing or USPS eligibility.
06How should I print or export USPS Intelligent Mail barcode?+
Follow USPS dimensions, placement and clear-space requirements and verify production output within the mailing process.
07What are common USPS Intelligent Mail barcode mistakes?+
Common errors include placeholder tracking data, incorrect routing information, poor bar-state reproduction and incorrect placement.
08Is USPS Intelligent Mail the same as POSTNET?+
No. Intelligent Mail is a different four-state 65-bar system carrying routing and tracking information. POSTNET uses a different legacy structure.