Even if you don't open a big card, there is an annual fee. There is no annual fee for small cards, which are specially used for foreign consumption and cannot be used at home.

If it is not opened after receipt, it can also be cancelled. There is no need to charge an annual fee.

Because the card is mailed to you, not by express delivery, and you don't need to sign for it. How to reply? I haven't tried. Or cancel and stay for it. Going back and forth, if you lose it, isn't there another thing to deal with?