Don’t forget to add a fun, relevant call-to-action button to your email. “Everything I have designed has a crisp professional look and feel. Love this service” - Cameron Sit up straight. Get creative with emojis in email subject lines to increase open rates! Fighting off robots… Want the loading time to be longer so we can spend more time together :) Keep your email subject line short and attention-grabbing. Boost your email opens with a punchy subject line.