Going to the post office to ship a package isn't necessary anymore. USPS, FedEx and UPS all have a pickup option. Amazon is a bit trickier. We'll explain.

The USPS requires shipping labels to be black and white and all text to be written in an uppercase, sans serif font. It recommends Arial Veranda, Helevetica, Avant Garde, Century Gothic and Geneva.

Previously, Poshmark buyers would pay a range for shipping depending on the weight of the product, box etc. The new label offers a flat price for 2-3 day flat rate priority shipping.

Military Care Kit: USPS offers a free Military Care Kit with boxes, tape, forms and labels for shipping to members of the military. The supplies are free.