You can close a 邮政信箱 by going to 管理邮箱, signing in to your account, 并点击ing the 关闭/请求退款 框旁边的链接. You can also request a 邮政信箱 be closed by informing the clerk at the Post Office where your box is located. Once a box is closed, be sure to submit a 更改地址 (COA) form. Depending on where you close your box, the form will be provided online on your close/refund confirmation page or by the clerk at the Post Office. Your mail can be forwarded to your new address for up to one year.