postal couriers are companies that provide postal and shipping services for individuals and businesses. These services include the delivery of packages, letters, and other mail items within a specific geographic area or internationally. Well-known postal couriers include USPS, FedEx, UPS, DHL, and others. Postal couriers offer various shipping options, such as overnight delivery, standard ground shipping, and international services, each with different pricing, speed, and reliability. Choosing the right postal courier depends on the needs of the shipment, including cost, delivery speed, and tracking services.