After ten years, Poste Italiano has finally granted me the use of its service of delivery by courier. The costs of this service are generally much cheaper than those offered by the other various couriers that I get in touch with; but, unfortunately, compared to the costs of Poste Italiane's basic services (both standard and registered mail), they are really convenient only for European destinations.
Thus, from August 29th, parcels with a European destination will be sent by courier at a lowered cost, and you can see the rates and the exceptions for the various European countries by visiting my website (Terms and Conditions page).
For the rest of the world, the rates remain as quoted on the webpage.