Your parcel will pass from articulated lorries to vans, through conveyor belts and down chutes. It will be lifted, slid from trays, and may be transported around depots in a metal cage. It is also handled by sorting staff as it progresses between sorting depots up and down the country, diverted in to the correct pathways for its destination like a ball in a pinball machine.
A courier delivery network is therefore not suitable for fragile items like glass, or valuables that are on the prohibited list and that may benefit from a more personal service. It is designed for well-packaged, clearly-labelled items that need to reach their destination quickly and with a proof of delivery.