In a few weeks I will have a flight with few hours transfer in Zurich. I will have several hours and I can leave the transfer zone, it won't be enough to leave the airport though.
Let's say I want to order something from an online shop located in Switzerland, is there any way to get it delivered to the airport so I could pick it up during my transfer?
You can send it "Poste restante" to the Post office in the airport. Just address it to:
Mr or Mrs Firstname Lastname
Poste restante
8060 Zürich
The Post Office is located in arrivals 3, and is open every day with pretty long hours (7h30-21h00 Monday-to-Friday, 8h00-21h00 Saturdays and Sundays).
Note however that this will probably work only if the parcel is actually sent by Post, and not through one of the alternative parcel delivery companies.
Some retailers and/or card issuers may also have a problem sending a parcel to a Poste restante address or an address not matching the card's billing address.
And of course you need to be sure the parcel gets there before you do (they will keep it for a month).
Of course, you need to be able to exit the airside, which means entering the Schengen Area if you're in transit between two non-Schengen flights, with all the consequences in terms of visa requirements.
This page from Swiss Post shows that the airport in Zürich has a post office with PickPost Service. It's open 07:30-21:00 though, so not 24/7.
As @jcaron mentions PickPost is only available for Swiss residents. But among services mentioned in the airport post office page is "Receiving letter and parcels" so I guess Poste Restante could work.
This is a generic answer but one other option in these circumstances is to phone one of the hotels nearby (preferably with a shuttle bus to the terminal) and ask them if you can have a package delivered to their front desk. Intimate that you’d leave a tip for this.
