Since I've already been locked out of a previous similar thread, and the answers have been rambling, I'll now formulate the question in far more concrete terms: Can a registered letter have an anonymous sender? I.e. no sender's name on the front, back, side etc. of the envelope?
I know that receipt of such a letter may have character and legal consequences and I am under no obligation to receive such a letter, but does the Post Office have the right to accept such a letter from the sender, post it and still try to press me into receiving an anonymous letter with a receipt?
I know that receipt of such a letter may have character and legal consequences and I am under no obligation to receive such a letter, but does the Post Office have the right to accept such a letter from the sender, post it and still try to press me into receiving an anonymous letter with a receipt?