Sit up straight. I’m worth the wait Keep your email subject line short and attention-grabbing. Test, test, and test again! Make sure your email looks good on all devices before you send it out. Keep an eye on your email open rate to analyze and improve performance! Is anyone even reading this? Want the loading time to be longer so we can spend more time together :) A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails.