The United States Postal Service (USPS) is the only organization in the country that regularly delivers to every residential and business address. Processing and delivering 47 percent of the world's mail, USPS manages over 30,000 retail locations and is committed to providing secure, reliable, and affordable delivery of mail and packages to more than 157 million addresses in the United States, its territories, and its military bases worldwide. Customers praise the professionalism and friendliness of the USPS staff, who go above and beyond to ensure the best service. Despite occasional long lines, the employees are described as pleasant, kind, resourceful, and extremely patient, even when customers make mistakes. One reviewer was grateful the staff noticed their phone was accidentally packaged and helped them retrieve it before shipping. Overall, the USPS is lauded for its commitment to quality service and customer care.