30 Usps Tracking Barcode Label 400

Both the label 400 and the amazon generated usps label use that tracking symbology. The label 400 can be ordered through the usps. Using Usps Labels Not Shipped Ebay Suspended Amp Paypal Limited Forums With the january 2 2014 release of our endicia software we began using a new usps barcode protocol called intelligent mail parcel barcode or impb for short.