Can you put any package into a drop off slot as long as it fits?

mail slot drop box   Dan mailbox with slot and lock

mail slot How else will I leave cash for you ? Stacie teased me drop box for change Got it , I sipped my beer , used the calculator

Email* Enter correct Email ID Mobile* Enter correct Mobile Number Model Drop Only Pickup and Drop Only Doorstep Advantage Pickup Address Flat Use DPD Online for a fast, reliable service Affordable next day delivery available on drop off and collection services within the UK and internationally

aanhangwagen slot DuraBox Through-The-Door Locking Drop Box D500, Heavy Duty Steel Mailbox for Depositing Mail, Keys, Rent Payments, Checks Wall Mounted Drop Safe for Business