You can use this tool as a newsletter by collecting the emails from your visitors
Before setting up the tool, you need to create an account on Google Tag Manager And link it to your website, click on the button below to learn how
Go to Addthis.com
Click on Get started, it's free

Fill in your info and Let's get started

If you have an account, log in and go to Tools, then Add new tool
Choose List building
Choose the type of the tool, then Continue
You can control the tool through this taskbar
Select how you would like to collect emails (I chose here Download to CSV and create a new list and name it)
Control the text design
Control the tool design
You can choose when to show this popup again to the same visitor, or hide the tool from specific pages on your website
Choose when to appear this popup (When exit or after) and put the URL which will redirect the visitor after submitting the email
Activate the tool after finishing
**If you previously set up a tool using this website, so you don't need to go through the following steps, just publish your website and preview it outside**
Click on Get the code
Choose Magento
Scroll down to get the code and copy it
Visit tagmanager.google.com and click on New Tag
Click on Tag Configuration
Click on Custom HTML
Paste your code
Click on Triggering
Select All Pages and click Add
Rename the Tag Name and click Save
Click on Submit, Publish then Continue
Log in to your Wuilt account and publish your website
If the visitor intent to exit the website, this popup will appear before closing the tab

You can collect the emails from your visitors by clicking on Tools, Email lists, then CSV
Your visitors' emails will be collected in an Excel file on your device