And my front door here at the office here, I'm a real estate appraiser by trade, and my front office here had a mail drop in it.
在我办公室的前门… … 我是一名房地产估价师，我的办公室前面有个信箱。
英语百科
Commercial mail receiving agency
（重定向自Mail Drop）
A commercial mail receiving agency (CMRA), also known as a mail drop, typically operates as a Private Mail Box Operator.
A customer of a CMRA can receive mail and other deliveries at the street address of the CMRA rather than the customer's own street address. Depending on the agreement between the customer and the CMRA, the CMRA can forward the mail to the customer or hold it for pickup.