Get creative with emojis in email subject lines to increase open rates! Is anyone even reading this? Test, test, and test again! Make sure your email looks good on all devices before you send it out. Don’t forget to add a short preview description to encourage people to click on your email. Boost your email opens with a punchy subject line. Not just a pretty interface Let your imagination run wild. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails.