Boost your email opens with a punchy subject line. Keep an eye on your email open rate to analyze and improve performance! Let your imagination run wild. I’m worth the wait Keep your email subject line short and attention-grabbing. Try different email subject line styles to find what gets the most opens. Don’t forget to add a fun, relevant call-to-action button to your email. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email!