"I use PosterMyWall to create flyers for the MANY non-profit organizations that we are involved with!" - Stachia Opening the door to unlimited creativity… Keep your email subject line short and attention-grabbing. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Feel free to spin in your chair while you wait Try different email subject line styles to find what gets the most opens. Get creative with emojis in email subject lines to increase open rates! Don’t forget to add a fun, relevant call-to-action button to your email.