Here are a couple of items that will accomplish a lot. We would build both of them into the stucco columns that will frame either the driveway or the front walk.
Here are direct links to them on the web for cost/details. We could even put them in a single column with the mail facing the street and the parcel section on the back side.
https://www.jaycomailboxes.com/residential-mailboxes/letter-locker/supreme/supreme-letter-locker-heavy-duty
https://www.jaycomailboxes.com/commercial-mailboxes/parcel-drop-box/large-parcel-drop-box-rear-access
Thoughts?