I think you should try the Weber Email Marketing. Developed and introduced by Combidesk, AWeber Email Marketing is known as a productive marketing tool which can provide many subscription popups. Once installed, a popup of registration will immediately be displayed and ask your visitors to subscribe to your newsletter whenever they land on your page. As a result, this application will synchronize the data of those subscribers; which can be the name, email, address, purchase, or even the total amount of their expenditures; to your AWeber list every 15 minutes. Note that, from your blog posts, emails are automatically created but you can also disable them. With more than 700 templates of email, AWeber Email Marketing enables store admins to customize your email’s look. This application completely integrates with AWeber. A free trial of 30 days is provided, let’s start growing your business now!
You can get the app here: https://avada.io/shopify/email/