Keep an eye on your email open rate to analyze and improve performance! I wish I looked as good as you while waiting 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! [insert fun loading text here] One Mississippi, two Mississippi… A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Boost your email opens with a punchy subject line. Keep your email subject line short and attention-grabbing.