I am concerned that that postal mail (and other deliveries not requiring a signature) may be at risk from theft or unauthorised access. My company is based in a multi-tenant office with an unattended reception and no CCTV. When the postman visits, he buzzes one of the offices on the intercom who let him into the reception, where he leaves the mail on the reception desk.
Anyone with access to this reception (employees from the companies in the building, visitors, facilities staff, and so on), could pick up and walk away with anything that's left there. Since most of the people who work in this building don't use the main reception to enter the office, unattended items could be left there for several hours before being picked up.
I doubt that I could persuade our landlord to post a receptionist at the front desk, and there's nowhere that a set of lockable mailboxes could be installed (and they wouldn't be big enough to store the packages that are delivered). What other options are there?