Opening the door to unlimited creativity… Let your imagination run wild. Don’t forget to add a fun, relevant call-to-action button to your email. Get creative with emojis in email subject lines to increase open rates! Keep your email subject line short and attention-grabbing. Don’t make ‘em yawn! Keep your emails exciting and brief. Want the loading time to be longer so we can spend more time together :) Boost your email opens with a punchy subject line.