what is a courier company refers to a business that specializes in the transport of packages and documents from one location to another. Courier companies offer a wide range of services, including express and same-day delivery, as well as international shipping. Couriers often provide more personalized services than larger postal systems, including door-to-door pickup and delivery, tracking, and customized solutions. Popular examples of courier companies include FedEx, UPS, DHL, and local courier services.