Get creative with emojis in email subject lines to increase open rates! Don’t forget to add a short preview description to encourage people to click on your email. We’re very font of you because you’re our type. Time to get that bread. Not just a pretty interface 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Test, test, and test again! Make sure your email looks good on all devices before you send it out. Sit up straight.