Join 4 million members in making awesome marketing content. Don’t forget to add a short preview description to encourage people to click on your email. Fighting off robots… Let your imagination run wild. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Keep your email subject line short and attention-grabbing. Get creative with emojis in email subject lines to increase open rates! Test, test, and test again! Make sure your email looks good on all devices before you send it out.