Can You Put Personal Spending on a Business Card? You Might Get This Email About It

We get this question a lot: "Can I put personal spending on a business credit card?" While I'm not aware of any law against it, and there's nothing physically stopping you from swiping that card, you might get an email like the one I received yesterday. It's asking about my charges and includes a ton of homework. I want to share it with you to help clarify the answer to this question.