While consumers are using their mobile devices to check email more and more, almost 73 percent of marketing emails are being opened on the desktop, according to new metrics from eMarketer. According to the report, 20 percent of emails are getting opened on smartphones and less than 7 percent are being read on tablets. The report also found that about 23 percent of all emails are being opened at all, and an average of five percent of these emails are getting clicked on. Emails coming from the financial services industry average the highest open rates at around 38 percent.