I’m worth the wait Don’t forget to add a fun, relevant call-to-action button to your email. Fighting off robots… Want the loading time to be longer so we can spend more time together :) Don’t make ‘em yawn! Keep your emails exciting and brief. Keep your email subject line short and attention-grabbing. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email!