Stealing packages left on doorsteps is a big problem in my neighborhood, particularly around Christmas. My mail carrier leaves my packages between the front door and storm door, or if the package won’t fit, he’ll walk it to my side porch. The side porch isn’t visible from the street. This is an arrangement he and I worked out after one of my deliveries was stolen.
Any possible thief better love 72X51” cellular blinds in shades of green.
If you are a frequent online purchaser, use a web cam to capture front porch activity.
Options depending on what you want to spend:
Any usb cam can be used with the free yawcam package.
hootoo and others make fixed outdoor wifi cams for $70,
and point tilt zoom versions for $250.
Also, blue iris makes inexpensive software for recording and
managing captured video clips.