While Groupon has lower read rates than other retailers when it comes to emails, the brand is actually a major contender in the retail email space. The reason being that the daily deals
site actually has double the list size of Walmart and other large companies. In fact, Groupon mails more than 17x the number of campaigns that are sent by Walmart, Macy's and Target combined, yet has
a large overlap in the subscriber group.Read the whole story at Direct Marketing News »