Hello akane, it is delivery to the door, if there is no ones pick the package, the postman (Standard Shipping) or delivery staff (Express Shipping & Premium Express shipping) will put the package back to the office and leave a note at the door. If you'd like to send it to the Post Box, please choose Standard Shipping or write down the message in Remark box. n_n
**All 3 methods (Standard Shipping, Express Shipping, Premium Express Shipping) can send to Post Box.