Does USPS have insulated boxes? Customer Support 22 August 2022 USPS Priority Mail Regional Rate Box B1 Insulating Panels 60 Pack. This kit has enough panels to insulate 60 USPS…
How do I ship a package with cold food? Customer Support 11 August 2022 Use a thin plastic liner for the inside of the package, and enclose the food in a plastic bag as…
