“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. Generating witty text... 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Boost your email opens with a punchy subject line. Time to get that bread. One Mississippi, two Mississippi… Keep your email subject line short and attention-grabbing. Don’t forget to add a fun, relevant call-to-action button to your email.