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Allow USPS 4x6 Thermal Label

We ship FedEx and UPS using the 4x6 Thermal label in ZPL format. USPS allows this label also, but it is not supported in Acumatica. Allowing this label type for USPS would let us use the same thermal printer for all carriers, instead of having to load half sheet labels into a laser printer for USPS.

  • Lance Caswell
  • Mar 16 2015
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  • Douglas Johnson commented
    June 29, 2018 20:31

    Workaround: we are developing an interface to USPS via In my preliminary testing, this interface supported the ZPL format ... as well as something called AZpl and BZpl.

  • Gabriel Michaud commented
    March 20, 2015 13:54

    Dear Lance,

    Thanks for your suggestion. Unfortunately, it looks like the USPS Shipping API doesn't support the ability to print labels on a thermal printer, and only provides a half sheet format. Supporting 4x6 would require us to design a completely custom label, and at this point we don't have any plans to support it. If USPS modifies their API to support thermal printers, like UPS and FexEx do, we will be happy to add support for it in the product.

    Best regards,