[1] The international parcel service, which allowed the orderly shipment of mailed packages and parcels from one country to another according to predetermined rates, was established by the Universal Postal Union on 1 October 1881 (Great Britain, India, The Netherlands and Persia, 1 April 1882), following the agreement of 1880 in Paris during a three-week conference on the subject.
[2] The service was difficult to introduce as in several countries the carriage of parcels was a monopoly of the railway companies, and Egypt, Great Britain, India, Canada and Italy all initially claimed that there was no parcel service in their country.
][citation needed] The eight Australasian colonies (South Australia, Western Australia, New South Wales, Queensland, Victoria, Tasmania, New Zealand, British New Guinea and Fiji) and the other separate postal services of the colonies joined the UPU in 1891.
Services by road continued to thrive even during the railway age, including by bus, tram and trolley car.
Parcels often bear a barcode so they can be tracked at all the stages up to their reception by the final recipient.