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! Time to get that bread. Try different email subject line styles to find what gets the most opens. I’m worth the wait Don’t make ‘em yawn! Keep your emails exciting and brief. Keep your email subject line short and attention-grabbing. Don’t forget to add a short preview description to encourage people to click on your email.