@ruemaleficent Not sure what differences there might be in different countries, but here (germany) i saw some of them handwriting the envelopes in front of our mailbox. So maybe there is no sending or registry, just mailbox stuffing?
I think it changed around the time covid started, but i am not 100% sure on that.
(sidenote: "no ads and no free newspapers" was ignored)
@ruemaleficent How unpleasant. Wish you best of luck then to get them to stop without any risky action.
@admitsWrongIfProven Next time there's a similar letter I'll be steaming it open to check then resealing it and returning it to sender with extreme prejudice.
@admitsWrongIfProven This was sent through the mail. Our building has secure mailboxes that aren't accessible except by key, and we have a door guard that would prevent any such thing even if the boxes were open.