What is a Label 400?

The Label 400 is a pre-printed tracking label that is free from the USPS. Using a Label 400 will not qualify for Commercial Base Pricing in 2015 but it does meet the USPS  requirement for affixing a barcode to every package. The Label 400 can be ordered through the USPS:

  • 1-800-222-1811
  • Mobile USPS® App
  • Available at the retail counter