Don’t forget to add a fun, relevant call-to-action button to 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! Want the loading time to be longer so we can spend more time together :) I wish I looked as good as you while waiting A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Not just a pretty interface Get creative with emojis in email subject lines to increase open rates!