How to get boxes for shipping via USPS ground

How to get boxes for shipping via USPS ground 📦If you are a Poshmark seller & want free, new USPS boxes and mailers for shipping out your orders to buyers, see the slides in this listing for how you may obtain these. 😳❗️Be prepared to receive mass quantities of these, so you will need plenty of storage space!! And proceed with caution: I got a nasty paper cut slice when opening the cardboard boxes.😬📦 Now go get some sales!!💕🍀✨