A pop-up signup form helps you connect with your store website visitors. Design it to fit your brand, and add a special offer or discount to help grow your audience and boost your sales.
First you will need to register to https://mailchimp.com
In your Mailchimp account, click on Audience menu and select Signup forms
Select Subscriber pop-up
Click on Connect Site button
Enter your ecom shop URL address and check I accept the additional Terms for connected sites then click Get Started button
Click on Copy to clipboard button to copy the code
Go to your store builder shop Main Store Settings menu and select Custom Scripts
Paste the Mailchimp code in the SCRIPTS BEFORE </HEAD> section
Go back to Mailchimp and click on CHECK CONNECTION button
Enable the pop up slider button
10. Now, access your site and you should be able to see the Mailchimp subscribe newsletter pop up.