EngageBox is a new version of the best Joomla extension for building any pop-up windows on site pages, which can significantly increase the number of subscribers.
Demo: https://www.tassos.gr/joomla-extensions/engagebox
Voucher Wheel is a powerful tool to engage your customers by giving them a chance to win a prize by spinning a lucky wheel. Developed in Python, Django and jаvascript, Voucher Wheel is fully customisable in an admin portal.
Demo: https://codecanyon.net/item/voucher-wheel-engage-and-give-prizes-to-your-customers/33951156
With the Icegram Popup Plugin, you can set up exit intent popups, action bars, icons, stickers, inline subscription, fullscreen overlay, ribbons, sidebar and more in no time terms.
Demo: https://www.icegram.com