I wish I looked as good as you while waiting Sit up straight. 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! Don’t forget to add a short preview description to encourage people to click on your email. Don’t forget to add a fun, relevant call-to-action button to your email. Want the loading time to be longer so we can spend more time together :) Try different email subject line styles to find what gets the most opens.