Earlier today the local cookie delivery service knocked on my door with cookies that were already paid for that I did not order.
The guy said it was addressed to my townhouse (eg 555 E Cardboard St). However, tenants sometimes confuse their house number with a unit number and will use my street address for deliveries (eg 555 E Cardboard St #575). I told the guy that I didn't order it, and he said he would call the customer to clarify.
So if someone addresses a cookie delivery to me, am I allowed to keep the cookies? I wouldn't suspect that this would fall into the jurisdiction of mail theft.
One could argue that I believed it was sent as a gift from a family member or friend anonymously and that the cookie company never expected anything in return from me for the delivery (as it was already paid for). I also considered it could fall under unjust enrichment even though I never made an agreement with the company to have cookies delivered.