Among the oldest means of transport of postal operators are trains - mail has been transported by train since the very beginning of the railway, especially before the network of countless roads has been built. Specialized wagons were made to meet the demand for postal services. But the train is also a means of transport of the present since in 2020 some operators ordered new postal trains to reconnect long-distance routes. More and more people are labelling train as the best way of transport in the future due to the minimal environmental impact and high speed which are comparable to airplanes.