One Mississippi, two Mississippi… We’re very font of you because you’re our type. Keep your email subject line short and attention-grabbing. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Time to get that bread. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Not just a pretty interface Test, test, and test again! Make sure your email looks good on all devices before you send it out.