51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! [insert fun loading text here] I wish I looked as good as you while waiting Don’t forget to add a fun, relevant call-to-action button to your email. Keep your email subject line short and attention-grabbing. Get creative with emojis in email subject lines to increase open rates! Is anyone even reading this? Avoid getting marked as spam! Only email people who have agreed to receive emails from you.