Want the loading time to be longer so we can spend more time together :) Get creative with emojis in email subject lines to increase open rates! Keep your email subject line short and attention-grabbing. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Don’t forget to add a short preview description to encourage people to click on your email. Let your imagination run wild. Don’t forget to add a fun, relevant call-to-action button to your email. Boost your email opens with a punchy subject line.