In this tutorial you will learn how to add an email subscription pop-up to your WordPress website. It does not require installing any plugin.
Log in to your Mailchimp account
Open Audience from the top menu
Click on Manage Audience drop-down and select Signup forms
Click on the Select button next to Subscriber pop-up
Design your pop-up and click on Generate Code
Copy the code snippet to clipboard
Log in to your WordPress admin panel
From the side menu hover on Appearance and select Theme Editor
Open Theme Footer file (footer.php)
Scroll down to the bottom of the file and paste the pop-up code snippet right above the closing </body> tag
Update the file and you're done. The popup should appear on your website.