Sit up straight. I wish I looked as good as you while waiting Don’t forget to add a short preview description to encourage people to click on your email. 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! Don’t forget to add a fun, relevant call-to-action button to your email. Is anyone even reading this? We’re very font of you because you’re our type.