Try different email subject line styles to find what gets the most opens. Feel free to spin in your chair while you wait I wish I looked as good as you while waiting 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Generating witty text... Get creative with emojis in email subject lines to increase open rates! Let your imagination run wild. Avoid getting marked as spam! Only email people who have agreed to receive emails from you.