If you receive "unrequested" packages on your doorstep addressesaddressed to you, they are yours.
This is to prevent companies from sending extra stuff/unrequested stuff and then asking for payment.
You can decide to notify the seller of the mistake and ask and ask them to pay for the return of the unwanted goodgoods. If you If you decide to keep it, they have no recourse.
Source: What To Do If You’re Billed for Things You Never Got, or You Get Unordered Products by the FTC by the FTC (Consumer Information):
By law, companies can’t send unordered merchandise to you, then demand payment. That means you never have to pay for things you get but didn’t order. You also don’t have to return unordered merchandise. You’re legally entitled to keep it as a free gift.
[Emphasis added]