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! I wish I looked as good as you while waiting Get creative with emojis in email subject lines to increase open rates! We’re very font of you because you’re our type. Generating witty text... A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Don’t make ‘em yawn! Keep your emails exciting and brief.