LetterStream Mailing Barcodes
Getting Started
LetterStream uses various types of barcodes on mail pieces to improve mailing speed, accuracy, and traceability. These barcodes serve distinct purposes and are automatically added to documents where applicable—they cannot be removed.
In This Article
Certified Mail Barcode
Every certified mail item sent via LetterStream includes a Certified Mail barcode and tracking number.
- Purpose: Enables USPS to provide real-time status updates and delivery confirmation.
- Visibility: Clearly printed to be viewed through the windowed envelope of certified mail pieces.
2D Barcode
A small 2D barcode appears next to the recipient address on nearly every mail piece.
- Purpose: LetterStream use only—speeds up processing and improves mailing accuracy.
- Additional Info: May be accompanied by light gray tracking numbers, which can also appear in the upper-left or right-hand side of each printed sheet.
- Note: The preview shown in your proof will reflect where these items are placed.
IMB (Intelligent Mail Barcode)
The Intelligent Mail Barcode is a USPS barcode used to help automate mail sorting and provide certain tracking information.
LetterStream places an IMB on mail pieces whenever possible. However, not every mail piece or mailing type will receive a full IMB.
Does LetterStream offer Full-Service IMB?
LetterStream does not technically offer USPS Full-Service IMB as a standard service. If your organization has specific IMB or Full-Service requirements, contact LetterStream Support with those requirements and we can determine whether we can assist.
If you have any question regarding barcodes, feel free to reach out to LetterStream Support for more information!