What Shipping Supplies Can I Use with Poshmark’s PoshPost?
You are able to use USPS Priority Mail, Flat Rate, and Regional Rate Boxes, Poly Mailers and Bubble Mailers. Another option is to use your own Poly Mailers, Bags and Boxes.
Keep in mind, USPS shipping supplies are free, so taking advantage of this as a serious Poshmark seller is extremely important in saving money on shipping costs.
Please note that Express Mail boxes are not approved for Poshmark use.