Sit up straight. Get creative with emojis in email subject lines to increase open rates! Let your imagination run wild. Is anyone even reading this? Keep your email subject line short and attention-grabbing. “I enjoy the creative experience of PosterMyWall. All the features are easy and great to use. You’ve made my job easier by far.” - Angel C. 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.