Don’t forget to add a fun, relevant call-to-action button to your email. Fighting off robots… Opening the door to unlimited creativity… [insert fun loading text here] Don’t make ‘em yawn! Keep your emails exciting and brief. Boost your email opens with a punchy subject line. Keep your email subject line short and attention-grabbing. Test, test, and test again! Make sure your email looks good on all devices before you send it out.