Go Online. There are numerous shipping supply websites which offer affordable and discounted rates on their products. Some even accept coupons codes that will further increase your savings.
Save cash by buying in bulk. This is a great tip for frequent shippers. You can save a lot if you purchase shipping supplies in bulk, whether from online or regular shipping supply shops. These stores usually give substantial discounts if you buy in mass quantities.
Get free shipping supplies from the post office. Just visit your local post office and ask for shipping materials. You can also go to the USPS website and order the supplies you need online and wait for them to get delivered.
Ask for boxes from specialty stores. If you are sending out an irregularly-shaped item like a golf club or tennis racquet, go to a specialty shop selling such items. These stores receive shipments on a regular basis and may be willing to give you boxes for little or no cost at all. Just ask politely.