I wish I looked as good as you while waiting Get creative with emojis in email subject lines to increase open rates! 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. Let your imagination run wild. Keep your email subject line short and attention-grabbing. [insert fun loading text here] A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails.