
Imb First Class Mail is a type of mail service that offers fast and reliable delivery. It's ideal for sending important documents, gifts, and packages.
One key benefit of Imb First Class Mail is its speed, with delivery times ranging from 1-3 business days. This makes it perfect for time-sensitive items.
You can track your Imb First Class Mail packages online, giving you peace of mind and ensuring you know exactly when your items will arrive.
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Creating IMB
Creating IMB is a crucial step in sending First Class Mail.
The Intelligent Mail Barcode (IMB) is a unique 65-bar code that identifies a mailpiece.
It's generated by combining a barcode identifier (BCID) with a serial number.
The IMB is scanned by postal machines to track mailpieces.
This tracking information is then used to provide real-time updates on mailpiece delivery.
Barcode Definition and History
The Intelligent Mail Barcode (IMb) is an advancement in barcode technology used extensively in the mailing industry.

It was developed by the USPS as a means to streamline the sorting and delivery of mail.
The IMb incorporates more information than traditional barcodes, making it a significant improvement in mail handling.
The introduction of the IMb marked a significant shift towards digital sophistication in mail handling.
It allows for more efficient processing and delivery of mail, which is a major advantage in today's fast-paced world.
How Barcodes Work?
Barcodes are used to encode data about the mail item, such as the sender and intended destination.
Each segment of the barcode represents specific information, making it easier for automated systems to process large volumes of mail with high precision.
The Intelligent Mail Barcode USPS is a type of barcode that uses a series of bars and spaces to encode this data.
This encoding allows for efficient mail sorting, making it a crucial component of the mail processing system.
Applications of Barcode
Intelligent Mail Barcodes (IMb) are a game-changer for mailing processes, and their applications are numerous.
One key application is the ability to track and manage mailpieces in real-time, allowing senders to stay on top of their mailings and make informed decisions about their campaigns.
By using IMb, senders can also verify the accuracy of their mailpieces, reducing errors and improving delivery rates.
Generating IMB

Generating IMB is relatively straightforward. To create a USPS Intelligent Mail barcode, you can follow a simple guide, which is available online.
You'll need to have the necessary information, such as the mailer ID, mail service request, and other required data. This data will be used to generate the IMb.
The USPS provides a barcode font that you can download and use to create the IMb. This font is specifically designed for generating Intelligent Mail barcodes.
To use the font, you'll need to enter the required data into a barcode generator or a spreadsheet. The font will then create the IMb for you.
The USPS recommends using a barcode generator or a spreadsheet to ensure accurate and correct IMb generation. This will save you time and reduce errors.
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USPS Guidelines
The USPS has specific guidelines for sending First Class Mail, and it's essential to follow them to ensure your mail arrives safely and efficiently.

The USPS requires a return address on every piece of mail, which should include the sender's name and address.
To qualify as First Class Mail, the piece must weigh 13 ounces or less.
First Class Mail can be sent via the USPS website, a post office, or a mail carrier.
The USPS recommends using a sturdy envelope or package to protect the contents and prevent damage during transit.
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Frequently Asked Questions
What shipping carrier is IMb?
The Intelligent Mail barcode (IMb) is used by the U.S. Postal Service (USPS) for tracking and sorting mail. It's a key component of USPS's mailstream.
Can you track an IMb?
IMb tracking is not available, but you can use free and automatic tracing to see the last USPS destination where your mailing was scanned
How long is first class mail taking?
First-Class Mail typically takes 1-5 business days to arrive. This affordable and reliable service is perfect for sending envelopes and postcards
What is the IMb layout of the USPS?
The IMb layout of the USPS consists of a 20-digit tracking code and an 11-digit Routing Code, which includes a ZIP Code. This unique combination helps track and deliver mail efficiently.
Sources
- https://www.uspsoig.gov/reports/audit-reports/use-imb-first-class-mail-letters-processing-costs
- https://shipblink.com/faq/tracking-usps-first-class-letters-with-imb-on-shipblink-and-easypost/
- https://hagensieker.com/2023/01/29/intelligent-mail-barcode/
- https://truencoa.com/creating-intelligent-mail-barcodes-imb/
- https://www.onlinetoolcenter.com/blog/Understanding-Intelligent-Mail-Barcode-What-It-Is-and-How-to-Generate-It.html
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