I agree with your point, but I do want to point out that mail theft (by postal workers, errant receivers, and malicious thieves) is not so uncommon. I have had

I agree with your point, but I do want to point out that mail theft (by postal workers, errant receivers, and malicious thieves) is not so uncommon. I have had a few things mailed without tracking numbers that I strongly suspect were stolen (mailed from post offices with complaints of theft or undelivered mail).