I get that you’re a small business (like two-person small) but if you never check your email, DON’T PUT IT ON YOUR BUSINESS CARD. And if it IS on your business card, when I specifically TELL YOU I will be emailing you asking for your address to set up auto payment, don’t let me assume that’s fine.
I literally told the lawn guy as such today AND told him he was damn lucky I had cash because I never have cash.