Keep your email subject line short and attention-grabbing. My day’s been ok, how’s yours? Generating witty text... I wish I looked as good as you while waiting Get creative with emojis in email subject lines to increase open rates! 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! Try different email subject line styles to find what gets the most opens.