Total Email Popup is an app that helps you create amazingly beautiful and effective Popup for Shopify.
You can notify your users of a new product, give an offer to boost sale or ask for email and up sell later. There are a lot of things you can do with popup for your Shopify store.
-> How about showing a pop up right before they intent to leave with a 10% coupon to make them tick?
-> Then using pop-ups with offers to capture email and start growing your email list is absolutely what you should do.
And, ultimately: You want to create pop-ups for your shop to turn visitors into customers.