Don’t make ‘em yawn! Keep your emails exciting and brief. Let your imagination run wild. Generating witty text... Want the loading time to be longer so we can spend more time together :) Keep your email subject line short and attention-grabbing. Try different email subject line styles to find what gets the most opens. Don’t forget to add a fun, relevant call-to-action button to your email. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email!