No such a thing in Poland.
If the recipent cannot receive the piece of mail, the postman puts a notification into the mailbox and the recipent can do it at the post office. Of course if we are talking about registered letters, parcels or postal orders. If it's a normal letter or postcard (if anyone sends such a things now at all) it's just left in the mailbox, as, as far as I guess, it is everywhere in the world.
You can address mail to a few persons but with only one address, so it won't work in this case. And it seems to be pointless, according to this:
Readers ask for clarification related to the Polish Post. It comes to registered letters. Who is entitled to receive them at home, in the absence of the recipient?
Registered shipments (including certified post items) except in certain cases (eg §43 of the rules of the provision of universal postal services) should be first delivered to the indicated address.
In the absence of the addressee or other persons entitled to receive registered mail in the mailbox, mailman leaves the recipient a notice of delivery attempt, together with information about the date of receipt and address of the paying post office where the parcel is stored.
And who can pick up the registered letter at home or at the post office? Such an item can receive an adult residing with the addressee, if the addressee does not filed at the facility operator's concern about delivery of registered mail or postal money order. It looks exactly the same thing receiving the package on the basis of notification from the post office.
gk24.pl/apps/pbcs.dll/article?AID=/20110303/BIZNES/343644791
a registered piece of mail can be received by any adult person living under the same address. The only exception are letters from courts of law.
It's a bit different in case of courier parcels (these delivered not by the national post - Poczta Polska - but by private companies), in case of which couriers often leave parcels at the neighbour even without the permission of the recipent. They shouldn't do so but they do. But usually, if there is a phone number on the parcel, they call the recipent before the delivery. If there is nobody under the target address (or there is no recipent and the present person refuses to receive the parcel) and the courier cannot contact with the recipent, he (if he's a reliable courier, not one of these leaving parcels at the neighbour) tries to deliver the parcel the next day, and later on it is available in the storage of the courier company. Which is much more difficult than in case of the post as post office is in each town and bigger village, while each courier company has only a few storages in the whole Poland.
