Keep your email subject line short and attention-grabbing. Don’t forget to add a short preview description to encourage people to click on your email. Opening the door to unlimited creativity… I’m worth the wait Test, test, and test again! Make sure your email looks good on all devices before you send it out. Get creative with emojis in email subject lines to increase open rates! Generating witty text... Don’t forget to add a fun, relevant call-to-action button to your email.