Shipping online (e.g., via USPS Click-N-Ship®) often provides lower commercial rates than paying in person. To give you the best guide, are you looking to ship: A small letter/envelope? A small package (e.g., for eBay)? Large, heavy boxes? Also, do you have a printer available at home? How to Prepare & Send a Package - USPS
Sites like Stamps.com or Pitney Bowes provide software to buy postage. buy prepaid postage online
Weigh your package and measure its dimensions (length, width, height). Shipping online (e
Input sender and recipient addresses, and package details into the online tool. Shipping online (e.g.