Test, test, and test again! Make sure your email looks good on all devices before you send it out. My day’s been ok, how’s yours? Is anyone even reading this? Try different email subject line styles to find what gets the most opens. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Get creative with emojis in email subject lines to increase open rates! Boost your email opens with a punchy subject line. Keep your email subject line short and attention-grabbing.