USPS Shopping Tips
Watch for Clearance specials. Clearance items are some of the best deals at USPS. First, items will get marked down to 15 percent or 30 percent off, then to 50 percent off, and finally end up at 70 percent off.
Look for stackable coupons. USPS allows up to three coupon codes per order. Look for site wide coupon codes, along with free shipping coupons.
Use Apps for broader reach. If you have an iPhone or Android smartphone, you can download the USPS App, where you can find the most up to date coupons and promos.