It is illegal to send cash through the United States Postal Service.
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Sending cash through the US Postal Service (USPS; ‘the Mail’) has never been a good idea, and yet it is attempted to the point that the Federal Trade Commission (FTC) has warned the public against it. After all, it a very common method of scamming someone since the cash is untraceable, and it cannot be verified that one indeed sent the cash via the mail. In addition to this common knowledge, there have continuously been rumors circulating on social media and in the mainstream that sending cash through USPS is actually illegal.
Misbar’s investigation into this claim reveals it to be false. It is a crime to send cash through USPS for illegal purposes, such as operating lotteries in states which don’t allow it or evading taxes. But there is no prohibition on sending cash for legitimate purposes. Otherwise, every time a grandmother or grandfather sent cash in a birthday card through the mail, it would be a crime! The USPS also allows users to insure their cash up to $50,000 if they are sending large sums and have reason to think it may be lost.