Keep your email subject line short and attention-grabbing. Don’t forget to add a short preview description to encourage people to click on your email. Want the loading time to be longer so we can spend more time together :) We’re very font of you because you’re our type. Keep an eye on your email open rate to analyze and improve performance! Sit up straight. Get creative with emojis in email subject lines to increase open rates! A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails.