Courier, poslaju, registered letter - postman is supposed to come to your door. Normal parcels, they're supposed to leave at your mailbox.

If you're living in a terrace house, and the parcel does not fit in your postbox, the postman will call for you to come out and get it; instead of leaving it at the road side or just chucking it over the gate. I'm sure if you don't come out, they will leave that same card in your post box. The card that says come get your letter.

Of course there are exceptions. Lazy people who "prepare" the card in advance instead of doing a proper delivery. My work place is above a retail shop (owned by the same company) that is opened 365 days a year. Yet, a few times every year, we will get cards telling us to come pick up registered letters at the post office. This will be mixed with the regular mail.