Keep an eye on your email open rate to analyze and improve performance! 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Keep your email subject line short and attention-grabbing. I wish I looked as good as you while waiting One Mississippi, two Mississippi… Time to get that bread. Generating witty text... A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails.