Get creative with emojis in email subject lines to increase open rates! Let your imagination run wild. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Opening the door to unlimited creativity… My day’s been ok, how’s yours? Want the loading time to be longer so we can spend more time together :) Generating witty text... Don’t forget to add a short preview description to encourage people to click on your email.