FireBox

FireBox is a WordPress-native popup builder that fires forms based on user behavior: time on page, scroll depth, exit intent, and other triggers you define. It integrates directly with WooCommerce to track revenue attributed to email subscribers and connects natively to Mailchimp, ConvertKit, ActiveCampaign, and other platforms. The plugin handles both email collection and lead magnet delivery without requiring an external service.

Best for WordPress site owners and ecommerce stores who want a popup solution that stays in WordPress. If you're running WooCommerce and want to see which email signups actually turn into customers, FireBox's revenue tracking closes that loop. It's lightweight compared to standalone popup services, so there's no extra app to learn.