Keep your email subject line short and attention-grabbing. Get creative with emojis in email subject lines to increase open rates! Generating witty text... Opening the door to unlimited creativity… 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 :) My day’s been ok, how’s yours? Avoid getting marked as spam! Only email people who have agreed to receive emails from you.