Get creative with emojis in email subject lines to increase open rates! Is anyone even reading this? One Mississippi, two Mississippi… "I use PosterMyWall to create flyers for the MANY non-profit organizations that we are involved with!" - Stachia Sit up straight. 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! We’re very font of you because you’re our type.