Mobile opens are growing rapidly. In the last year, emails opened on mobile devices more than doubled, and have increased 80% in the last six months alone. A common assumption many of us make is that subscribers ‘triage’ or preview emails on their mobile device before marking the email for later viewing—likely their webmail or work account on a desktop computer. Surprisingly, a deep dive into the same data we looked at for our latest market share stats showed otherwise: nearly 97% of emails are viewed just once.