Red Tape Hot Box the mysteries of polish mailboxes

What should one do when your neighbour's mail accidentally lands in your letter-box? The most logical and obvious answer seems to be - just take the letter out and throw it into the right box. Well, that's not so easy in Poland, especially if you are living in an apartment block (as are the majority of people in this country). Unlike in most countries, mailboxes in Poland do not have a hole through which the postman drops the letters into them. He has to open the whole big container of mailboxes in order to distribute the letters. If Mr Postman makes a mistake and someone else's letter ends up in your letterbox, you can either deliver the mail yourself to the door (sometimes a few flats up or down) or leave it on the mailbox. In that case, the chances of the letter surviving untouched for the next hour or so are pretty slim. Some buildings offer an additional mailbox called a zwroty (returns), which is a pretty good solution.
This curious situation is probably a relic of the previous political system. All the mail was distributed by the postman, probably after being verified first. That, in particular, applied to letters coming from abroad, and those addressed to the so-called "enemies of the people". The "hole-less" boxes made it easier for Big Brother to control the citizens' correspondence. They made it impossible to drop a letter or a note into a mailbox, thus limiting (but not eliminating) unofficial, illegal communication. There seems, therefore, to be some logical explanation for our unusual, "closed" mailboxes. However, knowing what absurdities can arise in this country, they could simply be an inadvertent mistake.