After the pioneering period, flight became a protagonist also with the passenger transport service on airships. The aviation undertakings performed with airplanes, seaplanes and airships, witnessed by the postal documents carried on board, are still preserved today. The "Italian Wings" became famous in the world: Mario de Bernardi, Arturo Ferrarin, Francesco de Pinedo, Umberto Nobile, Italo Balbo, Francis Lombardi.
The world's first postage stamp for airmail was issued in May 1927, on the occasion of the postal experiment round trip Turin-Rome conducted by the pilot Mario de Bernardi: an ordinary stamp for the 25-cent express, overprinted in black on three lines with the sentence “Airmail experiment May 1917 Turin = Rome + Rome = Turin", exclusively valid for the flight.
With the echoes of the First World War that was definitively extinguished, the civil development of the national - and international - air service, with the consequent postal transport, increased its breath.
Gabriele D’Annunzio promoted the first mass connection between Italy and Japan, but then his attention was captured by the Rijeka adventure. The idea, however, was now launched and who collected it were the pilots Arturo Ferrarin and Guido Masiero. Eleven aircraft took off from Rome, but only one arrived - flying - in Tokyo, the aircraft of Ferrarin. Both aircraft, that of Masiero and of Ferrarin, carried bags of private correspondence.
Commander Francesco De Pinedo left Italy, in 1925, on an air cruise directed to Australia and Japan. He returned to Rome after having spent 370 hours "in the air", travelling for 55,000 kilometres and touching 80 different locations. On this occasion there was no official mail transport from Italy but only aerogrammes between one stop and the next, organised on site and at the time. In 1927, the air cruise of the Atlantic of "Santa Maria" played a leading role. Stops in the two Americas were envisaged: Rio de Janeiro, Buenos Aires, New York, Chicago and Trepassey with the return to Sesto Calende. The embarked postal dispatches were transported privately by the crew, due to a lack of authorisation by the Italian authorities.