A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Don’t forget to add a fun, relevant call-to-action button to your email. One Mississippi, two Mississippi… Try different email subject line styles to find what gets the most opens. Don’t forget to add a short preview description to encourage people to click on your email. Keep your email subject line short and attention-grabbing. Don’t make ‘em yawn! Keep your emails exciting and brief.