Customers to Retailers: ‘Don't Spam Me, Bro!’

How many flash-sale emails a week does it take to drive a customer bonkers? Ten? Twenty? Fifty? It looks like retailers are pressing their luck. In a January study conducted online by YouGov, a whopping 75 percent of the 2,000 respondents said that they're overwhelmed by retailers’ emails and are turned off and resentful about receiving them. Given that many consumers don't want to be bombarded online, how are retailers responding to their backlash?