We’re very font of you because you’re our type. Don’t forget to add a short preview description to encourage people to click on your email. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Not just a pretty interface Don’t make ‘em yawn! Keep your emails exciting and brief. Fighting off robots… Don’t forget to add a fun, relevant call-to-action button to your email. Keep your email subject line short and attention-grabbing.