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’m worth the wait Want the loading time to be longer so we can spend more time together :) Keep your email subject line short and attention-grabbing. Sit up straight. My day’s been ok, how’s yours? Get creative with emojis in email subject lines to increase open rates!