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. Boost your email opens with a punchy subject line. I wish I looked as good as you while waiting Generating witty text... Get creative with emojis in email subject lines to increase open rates! Test, test, and test again! Make sure your email looks good on all devices before you send it out. Don’t forget to add a fun, relevant call-to-action button to your email.