Walmart gave Snopes a possible explanation for a customer being sent an email about a product he purchased with cash.

Ben Fox Rubin was a senior reporter for CNET News in Manhattan, reporting on Amazon, e-commerce and mobile payments. He previously worked as a reporter for The Wall Street Journal and got his start at newspapers in New York, Connecticut and Massachusetts.

More than 6,500 Walmart customers couldn’t access its mobile app and website earlier Tuesday in a brief outage.