Popup Maker is a powerful WordPress plugin that allows users to create and manage popups on their websites. It offers a variety of customization options, enabling users to design popups for email opt-ins, promotions, announcements, and more. The plugin includes features like targeting rules, triggers, and conditions to control when and where popups appear. Popup Maker also integrates with popular email marketing services and page builders. It is available in both free and premium versions, with the premium version unlocking advanced features like A/B testing, analytics, and more. Some third-party platforms offer Popup Maker under the GPL (General Public License), but these versions may exclude official support and updates.