Why is it "to you", not "to me"? Actually, I don't get the meaning of this sentence. They sent mail to woman? Or Conan?

Rebecca

Good question! She is using the pronoun "you" to express that the coupons get mailed out to people in general. So the woman is the one who received these specific coupons here, but "you" indicates that the companies mail out coupons like this to people in general. It is common in English to use the pronoun "you" when referring to something that happens hypothetically or to people in general. Ex: Children might say they hate you but they are usually just angry. Ex: It annoys me when people cut you in line. In both of these cases, "you" does not refer to another person that the speaker is talking to, but it instead refers to a situation that commonly happens and affects people in general.