• Wired, Monday, July 1, 2013 10:49 AM

Online retailers have quadrupled their customer acquisition via email over the past four years, according to a new report from marketing data company Custora. The report analyzed data from 72 million customers shopping on 86 different retailer sites and tracked which channels customers were clicking from to e-commerce sites. While email proved to be a strong acquisition channel, Facebook barely drove any sales and Twitter drove none. According to the report, organic search was the most popular channel for driving sales.

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