Join 4 million members in making awesome marketing content. Feel free to spin in your chair while you wait Generating witty text... Keep your email subject line short and attention-grabbing. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! 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. My day’s been ok, how’s yours?