Feel free to spin in your chair while you wait [insert fun loading text here] A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Is anyone even reading this? Get creative with emojis in email subject lines to increase open rates! 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Not just a pretty interface Don’t make ‘em yawn! Keep your emails exciting and brief.