There is exactly one moment when a customer gives you their full, undivided attention. No scrolling. No competitor one tab away. No algorithm deciding whether they see you.
It is the ten seconds they open your parcel.
Every ad you run is fighting for a sliver of a distracted brain. The unboxing is different. They asked for this. They are holding it. They are, for once, completely present. And you already paid for the delivery.
Most brands take that moment and mail a plain brown box.
You do not need luxury packaging to fix this. You need one human touch. A printed note that sounds like a person wrote it. A sticker. A single line of copy on the inside flap. A small unexpected extra. One reason to reach for their phone and show someone.
That is the cheapest marketing you will ever run, because you are not buying the attention. You already have it. You are just choosing whether to use it or waste it.