Sit up straight. Try different email subject line styles to find what gets the most opens. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. One Mississippi, two Mississippi… 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Get creative with emojis in email subject lines to increase open rates! Avoid getting marked as spam! Only email people who have agreed to receive emails from you. We’re very font of you because you’re our type.