Despite the influx of social networks, messaging apps and mobile, owning a customer's email address remains a top priority for marketers. Claims of email dying as a channel have been overblown. With the advancement of lead nurturing, CRM based retargeting, and custom audience targeting, the value of customer emails continues to climb. According to research from GigaOm, "Marketers consistently ranked email as the single most effective tactic for awareness, acquisition, conversion and retention". So it's no surprise that we're seeing more and more popups across publishers, retailers and anyone else operating a website. At Privy, we power email list growth campaigns for over 20,000 marketers around the world. In this report, we looked at six months worth of data across 5,000 of our most active users to understand the trends, data, and best practices around email capture. In most cases, these findings are based off 100 Million data points. Our hope is that by publishing insights from this data, you can become a more effective marketer yourself.