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! Is anyone even reading this? My day’s been ok, how’s yours? Fighting off robots… Want the loading time to be longer so we can spend more time together :) Get creative with emojis in email subject lines to increase open rates! Don’t forget to add a fun, relevant call-to-action button to your email.