The speed, security, tracking, signature, specialization and individualization of express services, and quick delivery times that are optional for the majority of everyday mail services set International Courier & Cargo Service for Martinique apart from regular mail services. Couriers are usually more expensive than regular mail services because they are a premium service. Typically, they are only used for packages where one or more of these features are important enough to justify the cost.

From local to regional, national, and international services, courier services come in all sizes. DHL, DTDC, FedEx, EMS International, TNT, UPS, India Post, J&T Express, and Aramex are among the major courier companies. These provide services all over the world, typically through a hub-and-spoke model.

Using courier software, courier services provide electronic tracking information and proof of delivery.