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! Get creative with emojis in email subject lines to increase open rates! Boost your email opens with a punchy subject line. We’re very font of you because you’re our type. Is anyone even reading this? Fighting off robots… Try different email subject line styles to find what gets the most opens.