Get creative with emojis in email subject lines to increase open rates! Not just a pretty interface Keep an eye on your email open rate to analyze and improve performance! 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Don’t make ‘em yawn! Keep your emails exciting and brief. Generating witty text... Want the loading time to be longer so we can spend more time together :) Boost your email opens with a punchy subject line.