I think you might enjoy Free Newsletter Popup Extension for Magento 2 . This is a trusted by thousands of customers worldwide.
Free Newsletter Popup Extension for Magento 2 is a great solution for those who want their visitors to be aware of all the latest and hot stuff on your store.
This is a universal extension to create popups with any HTML content, image or form when pages load for grab customer attention. Promote your products, news, ads and events or collect information from users by any kind of form (newsletter or any custom form) through an attractive popup window.
Features
You can fully control the appearance of your pop-ups by defining the following options:
Html content with any widgets or **bleep**.
Set popup visible for all pages or just homepage.
Show popup for special customer group.
Window dimensions.
Start and end date (you can set countdown time visible on popup).
Background for popup.
