American Adult Email Users, 2012-2017 [TABLE]
Adults will account for 87% of all US email users in 2013. Email use is near universal for internet users 18 and older. Nearly all adult internet users, or 78.4% of the US adult population, will send an email via any device at least once per month this year. The number of adults who use email will climb slightly throughout the forecast period, though most growth will come from US population increases. Read the rest at eMarketer.