Couriers are distinguished from ordinary mail services by features such as speed, security, tracking, signature, specialization and individualization of express services, and swift delivery times, which are optional for most everyday mail services. As a premium service, couriers are usually more expensive than standard mail services, and their use is normally limited to packages where one or more of these features are considered important enough to warrant the cost.
Courier services operate on all scales, from within specific towns or cities, to regional, national and global services
Postal service especially to transport and deliver the parcel and all what can be transferred legally, faster than regular mail, and the courier on the transfer of documents, catalogs, documents and personal items personal light important and parcels from individuals during the shortest time.