The United States Postal Service has received overwhelmingly positive reviews from its customers. The staff, especially Sue, are described as very kind and efficient, with one employee, Michelle, going above and beyond to provide exceptional service despite facing a heavy workload alone. Customers have had nothing but positive interactions, with the postal workers being polite, helpful, and going the extra mile, such as carrying large packages to customers' cars. The Londonderry Post Office, in particular, is praised for its excellent customer service, with the team going above and beyond to assist customers with their shipping and mailing needs. Overall, the United States Postal Service is commended for its friendly, patient, and responsive service, providing a positive experience for its customers.