Sit up straight. Keep your email subject line short and attention-grabbing. Try different email subject line styles to find what gets the most opens. Want the loading time to be longer so we can spend more time together :) Generating witty text... Keep an eye on your email open rate to analyze and improve performance! 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Avoid getting marked as spam! Only email people who have agreed to receive emails from you.