18 Best WordPress Plugins for Popup in 2025

1. Effortless Popup Creation: Popup Box offers a user-friendly interface that allows you to easily create and customize engaging popups in real-time using the live preview feature. This makes it a breeze to design popups that match your website’s branding and style.

2. Flexible Popup Triggers and Targeting: The plugin provides a variety of trigger options, such as clicks, scrolls, and page load, as well as the ability to target specific pages, posts, or the entire site. This allows you to deliver your popups at the most effective moments for maximum user engagement.

3. Rich Content Integration: Popup Box supports shortcodes, enabling you to seamlessly integrate forms, videos, and other content from popular plugins like Contact Form 7. This allows you to create interactive and multimedia-rich popups that capture your visitors’ attention.

4. Robust Customization Options: With the ability to fine-tune elements like fonts, colors, backgrounds, borders, and more, you can fully customize your popups to align with your brand’s visual identity. This ensures your popups blend harmoniously with your website’s overall aesthetic.

5. Proven Popularity and Reliability: With over 4,000 active installations and a 5-star rating, Popup Box has demonstrated its popularity and reliability among WordPress users. The plugin’s recent updates and responsive support further reinforce its dependability and suitability for your popup needs.

6. GDPR Compliance and Performance: Popup Box is designed to be GDPR-compliant and lightweight, focusing on performance without relying on jQuery. This ensures your popups will not compromise your website’s speed or user privacy, making it a responsible choice for your business.

1. Powerful Popup Builder: Elementor Pro offers a robust Popup Builder feature, allowing you to create eye-catching popups with advanced targeting and triggering options. This enables you to optimize user engagement and conversions on your WordPress site.

2. Seamless Integration: As a leading WordPress website creation platform, Elementor seamlessly integrates with your site, ensuring a consistent and cohesive design across all elements, including popups.

3. Extensive Customization: The plugin provides a wide range of design tools and features, such as pixel-perfect design, mask shapes, CSS transform, and entrance animations, empowering you to create unique and visually stunning popups that align with your brand.

4. Unparalleled Popularity and User Trust: With over 10 million active installs and a 4.6-star rating, Elementor has established itself as a trusted and widely-used WordPress plugin. Its recent updates and responsive support further contribute to its reliability.

5. AI-Powered Capabilities: Elementor’s native AI integration can help revolutionize your popup design and content creation process, allowing you to instantly generate sections, text, code, and images for your popups.

6. Robust Developer-Friendly Features: Elementor offers a developer-friendly environment with extensive documentation, APIs, and custom code areas, enabling you to extend its functionality and create custom popup solutions tailored to your specific needs.

1. Extensive Popup Customization: Popup Maker offers a wide range of customization options, allowing you to create visually appealing and highly personalized popup windows. From adjusting the look and feel to adding various content elements like images, videos, and forms, the plugin gives you the flexibility to design popups that perfectly match your website’s branding and objectives.

2. Versatile Popup Triggers: Popup Maker supports multiple triggering mechanisms, including exit-intent technology, click-based triggers, scroll-based triggers, and more. This ensures you can effectively capture your visitors’ attention at the right moments, whether they’re about to leave your site or actively engaging with your content.

3. Robust Targeting and Scheduling Options: The plugin’s advanced targeting and scheduling features enable you to display your popups to the right audience at the optimal time. You can target visitors based on their location, device, referrer, or even the number of pages they’ve visited, ensuring your offers reach the right people.

4. Integrated Email Autoresponder and Newsletter: Popup Maker’s built-in email autoresponder and newsletter functionality make it easy to grow your email list and stay connected with your subscribers. You can seamlessly collect leads and send automated follow-up messages or newsletters directly from the plugin’s dashboard.

5. Excellent User Feedback and Ongoing Support: With over 7,000 active installs and a rating of 4.4 out of 5 stars, Popup Maker has demonstrated its ability to satisfy users. Additionally, the plugin’s developers are responsive to customer feedback and actively work on updates, ensuring a reliable and continuously improving user experience.

We recommend considering Popup Maker as a comprehensive and user-friendly solution for adding engaging popup features to your WordPress website. Its extensive customization options, versatile triggering mechanisms, and integrated email marketing tools make it a compelling choice for businesses and website owners looking to enhance their online presence and conversion rates.

1. Responsive and Modern Popup Design: FooBox stands out with its responsive and modern lightbox design that automatically adjusts to look great on any device, whether in portrait or landscape orientation. This ensures a seamless and visually appealing popup experience for your users.

2. Effortless Setup and Automatic Functionality: The plugin requires zero configuration to add popup functionality to your website. It automatically adds modals to WordPress galleries, images with captions, and attachment images, making it a hassle-free solution for users.

3. Comprehensive Compatibility: FooBox works with most popular image gallery plugins, including FooGallery, NextGen, Justified Image Grid, and more. This wide compatibility ensures that the plugin will integrate smoothly with your existing website setup.

4. Gutenberg Support and Advanced Features: As a fully Gutenberg-compatible plugin, FooBox seamlessly integrates with the WordPress block editor, allowing users to easily add popup functionality to their content. The PRO version also offers advanced features like social sharing, video support, and custom styling options.

5. Active Development and User Satisfaction: With over 100,000 active installations and a 3.9-star rating, FooBox demonstrates its popularity and user satisfaction. The plugin has also received timely updates, addressing any reported issues, which is a testament to the developer’s commitment to providing a reliable and well-maintained solution.

1. Comprehensive Popup and Opt-in Form Builder: MailOptin offers a powerful and intuitive popup and opt-in form builder, allowing you to create beautiful, conversion-optimized campaigns in minutes. From lightbox popups to in-post forms and sidebar widgets, this plugin gives you a range of options to engage your visitors and grow your email list.

2. Seamless Email Marketing Integrations: MailOptin seamlessly integrates with all major email marketing platforms, including Mailchimp, AWeber, Constant Contact, HubSpot, and more. This means you can easily connect your popup forms to your existing email lists and automate your newsletter distribution.

3. Automated Email Newsletters and Drip Campaigns: With MailOptin, you can set up automated email newsletters to send your new blog posts directly to your subscribers. The plugin also supports drip campaigns, allowing you to nurture your leads and keep your audience engaged.

4. Personalization and Targeting Options: MailOptin offers advanced targeting and personalization features, such as the ability to display popups based on user behavior, device type, traffic source, and more. This ensures your popup campaigns are relevant and effective for your audience.

5. Proven Effectiveness and User Satisfaction: With over 20,000 active installations and a 4.8-out-of-5-star rating, MailOptin has a proven track record of helping WordPress users grow their email lists and improve their marketing efforts. Recent updates and responsiveness to user issues further demonstrate the plugin’s reliability.

6. All-in-One Solution for Lead Generation and Email Marketing: By combining powerful popup features with email newsletter management, MailOptin provides an all-in-one solution for your lead generation and email marketing needs. This can help streamline your marketing workflows and improve the overall effectiveness of your campaigns.

1. Powerful and Intuitive Popup Builder: The Brave plugin offers an easy-to-use drag-and-drop popup builder that allows you to create unique and visually appealing popups within minutes, without any coding required. This makes it an excellent choice for WordPress users looking to enhance their website’s conversion rate.

2. Extensive Popup Variety and Customization: With the ability to create various types of popups, including opt-in forms, contact forms, sticky headers, slide-ins, and more, the Brave plugin caters to a wide range of popup needs. Additionally, the plugin’s advanced customization options, such as separate desktop and mobile designs, animations, and custom code integration, give users the flexibility to create popups that perfectly fit their brand and website.

3. Powerful Form Builder and Integration: The Brave plugin comes with a built-in form builder, allowing you to create customized newsletter opt-in forms, feedback forms, and contact forms without the need for additional plugins. Plus, with integration for over 23 popular email service providers, users can easily connect their popups to their email marketing campaigns.

4. Impressive Performance and Analytics: Unlike some popup plugins that can slow down your website, Brave is designed with performance in mind, ensuring that your popups load quickly and efficiently. Additionally, the plugin’s comprehensive analytics tracking helps you monitor the performance of your popups, enabling you to make data-driven decisions to optimize your conversion rates.

5. Responsive Support and Frequent Updates: With a solid 4.8 out of 5-star rating and frequent updates addressing user issues, the Brave plugin demonstrates a commitment to providing a reliable and well-supported experience for WordPress users. This inspires confidence in the plugin’s long-term viability and ensures that users can get the assistance they need to make the most of its features.

1. Comprehensive Popup Types: The AI Popup plugin offers an extensive range of popup types, including Chat GPT AI, Image, HTML, Subscription, Facebook, Age Restriction, Gamification, Youtube, Iframe, Social, Contact Form, Countdown, and Dynamic Link. This versatility allows users to create highly engaging and customized popups to suit their specific needs.

2. Robust Customization Options: The plugin provides a wide array of customization options, enabling users to fine-tune the appearance and behavior of their popups. Features like adjustable popup width, height, max width, max height, close button, overlay click dismissal, and ESC key dismissal allow for a seamless and personalized user experience.

3. Specialized Popup Modules: The AI Popup plugin comes with dedicated modules for popular features, such as YouTube, Facebook, Social, Iframe, Contact Form, Countdown, and Dynamic Link Content. These modules make it easy to integrate specific functionality into the popup, streamlining the creation process and enhancing the overall user experience.

4. Powerful Targeting and Conditions: The plugin offers advanced targeting and display conditions, allowing users to show popups based on referral URL, page visits, browser detection, device detection, cookie detection, user roles, user status, and user country. This ensures the right popups are shown to the right audience, maximizing engagement and conversions.

5. Seamless Integration with Elementor: The AI Popup plugin is fully integrated with the popular Elementor page builder, enabling users to create and customize popup content directly within the Elementor interface. This integration enhances the plugin’s flexibility and streamlines the overall workflow for WordPress users.

6. Positive User Feedback and Responsiveness: With over 500 active installations and a 4.6-star rating, the AI Popup plugin has demonstrated its popularity and user satisfaction. Additionally, the plugin has a strong track record of resolving issues, with 9 out of 9 issues addressed in the last 2 months, indicating the developer’s commitment to providing a reliable and well-maintained solution.

1. Comprehensive Popup Capabilities: FireBox is a feature-rich WordPress popup plugin that offers a variety of popup formats, including classic lightbox popups, slide-in popups, fullscreen popups, sticky bars, and more. This versatility allows users to create engaging and attention-grabbing popups for various marketing and communication needs.

2. Powerful Lead Generation and Conversion Tools: The plugin’s email opt-in features, including the ability to offer discounts, giveaways, and lead magnets, make it an excellent choice for growing your email list and converting visitors into loyal subscribers. The integration with popular email service providers like MailChimp and SendInBlue further enhances its lead generation capabilities.

3. Advanced Targeting and Personalization: FireBox’s robust targeting options, such as targeting by device, location, user behavior, and WooCommerce-specific criteria, enable users to deliver highly personalized popup experiences. This can help increase the effectiveness of your popup campaigns and improve overall user engagement.

4. Excellent User Satisfaction and Responsiveness: With over 6,000 active installations and a stellar 4.9-out-of-5-star rating, FireBox has clearly demonstrated its popularity and user satisfaction. Moreover, the plugin has been consistently updated, with the developer resolving all reported issues within the last 2 months, ensuring a reliable and well-maintained experience for users.

5. Versatile Integration Capabilities: FireBox seamlessly integrates with various WordPress plugins and platforms, including Elementor, Gravity Forms, WooCommerce, and Easy Digital Downloads, among others. This makes it a versatile choice that can easily fit into your existing WordPress ecosystem and workflows.

6. Intuitive Visual Editor and Ready-to-Use Templates: The plugin’s Gutenberg-based visual editor and pre-made popup templates make it easy for users to create professional-looking popups without the need for extensive technical expertise. This can save time and effort, especially for those new to popup marketing.

1. Intuitive and Easy-to-Use Popup Builder: WP Popups boasts an easy and intuitive template builder, allowing users to create and customize their popups with just a few clicks, without requiring any coding skills.

2. Comprehensive Customization Options: The plugin offers a wide range of customization features, including the ability to adjust font color, background, borders, and even background opacity, giving users complete control over the look and feel of their popups.

3. Extensive Display Filters and Targeting Options: WP Popups provides a robust set of display filters and targeting options, enabling users to show their popups on specific pages, to specific user roles, or based on user behavior, such as referrer or time spent on the site.

4. Integration with Popular Form Plugins: The plugin is compatible with major form plugins like WPForms, Gravity Forms, and Contact Form 7, making it easy to integrate lead capture forms into your popups and grow your mailing lists and social following.

5. Strong User Satisfaction and Responsiveness: With over 30,000 active installations and a 4.9-out-of-5-star rating, WP Popups has demonstrated its popularity and user satisfaction. Additionally, the plugin has a track record of resolving issues in a timely manner, with 2 out of 6 issues addressed in the last 2 months.

6. Continuous Development and Premium Upgrades: The plugin is actively maintained, with the latest update occurring 5 months ago. Users also have the option to upgrade to the premium version, which offers advanced features such as exit-intent technology, A/B testing, and integration with a wider range of email marketing platforms.

1. Comprehensive Popup Features: Popup Maker and Popup Anything offers a wide range of popup options, including on-page load, on-click, exit-intent, scroll-triggered, and more. This flexibility allows you to create targeted and engaging popups for various user interactions.

2. Customizable and Responsive Design: The plugin gives you full control over the look and feel of your popups, with options to customize the animation, position, size, and other visual elements. Additionally, the popups are designed to be responsive, ensuring a seamless experience across devices.

3. Enhanced Conversion Rates: With features like A/B testing, smart targeting, and lead capture forms, Popup Maker and Popup Anything is designed to help you boost your conversion rates and grow your email list or sales. The plugin’s popularity and high user ratings suggest it’s an effective tool for businesses looking to increase their conversions.

4. Seamless Integration and Compatibility: The plugin is compatible with popular form plugins like Contact Form 7, Ninja Forms, and Gravity Forms, making it easy to integrate your popup campaigns with your existing lead generation and customer communication strategies.

5. Continuous Development and Support: With regular updates and a team dedicated to resolving issues, Popup Maker and Popup Anything demonstrates a commitment to providing a reliable and up-to-date plugin experience for its users. This ensures your popups remain effective and compatible with the latest WordPress versions.

6. Excellent Value: The plugin offers both a free version and a premium version with additional features, making it accessible to users with various budgets and needs. The premium version’s bundle deal can provide even more value for businesses looking to streamline their essential WordPress tools.

1. Comprehensive Popup Solution: Hustle offers a wide range of popup features, including popups, slide-ins, widgets, and embeds, giving you the flexibility to create diverse marketing campaigns and lead generation strategies across your WordPress site.

2. Instant Templates and Customization: With its pre-designed templates for various use cases, Hustle makes it easy to get started with popups. Plus, its flexible appearance settings and advanced customization options allow you to tailor the look and feel of your popups to match your brand.

3. Powerful Targeting and Scheduling: Hustle’s robust targeting and scheduling features enable you to display your popups to the right audience at the optimal time, ensuring maximum engagement and conversion rates. You can target visitors based on various conditions, such as location, device, and behavior, and schedule your popups to run at specific times or dates.

4. Proven Popularity and Reliability: With over 100,000 active installs and a 4.4-star rating, Hustle has demonstrated its popularity and reliability among WordPress users. The plugin also receives regular updates, and the team is responsive to addressing any issues, providing you with peace of mind.

5. Comprehensive Marketing Suite: Hustle is part of the WPMU DEV suite of WordPress plugins, which includes other powerful tools like Smush (image optimization), Forminator (form builder), and Hummingbird (performance optimization). This integration allows you to leverage a comprehensive marketing and optimization solution for your WordPress site.

1. Seamless Login and Registration Experience: The plugin offers a smooth, AJAX-powered popup for login, signup, and password reset, providing a seamless user experience on your WordPress site.

2. Customizable and Flexible Design: With two fully customizable popup and inline form designs, you can easily integrate the plugin’s features to match the branding and aesthetic of your website.

3. Expanded Functionality with WooCommerce Integration: If you’re running a WooCommerce-powered site, this plugin offers a perfect solution, allowing you to integrate the login and registration process directly into your e-commerce workflow.

4. Responsive to User Needs: The plugin has been actively maintained, with 11 issues resolved in the last 2 months, indicating the developer’s commitment to addressing user feedback and improving the plugin’s functionality.

5. Broad Adoption and High User Satisfaction: With over 50,000 active installations and a 4.8-star rating, this plugin has proven to be a popular and well-received solution among WordPress users, providing confidence in its reliability and effectiveness.

6. Extensibility through Add-ons: The plugin offers a range of add-ons, including custom registration fields, social login, one-time password login, and advanced security features like reCAPTCHA, further enhancing the plugin’s capabilities to meet your specific needs.

1. Seamless Integration with Divi: The Popups for Divi plugin is designed specifically for users of the popular Divi WordPress theme. It seamlessly integrates with Divi’s Visual Builder, allowing you to easily turn any section into a popup with just a few clicks.

2. Simplicity and Ease of Use: The plugin is described as “super simple” to set up and use. With no complex configuration required, users can quickly create their first popup by toggling the “This is a Popup” option in the Section Settings.

3. Comprehensive Customization Options: While the plugin is easy to use, it also offers a range of customization options. Users can set custom “Popup IDs,” choose from different CSS class options, and leverage the plugin’s JS API for advanced customizations.

4. Widespread Compatibility and Reliability: The plugin has been tested and proven to work across all major browsers on both Windows and Mac platforms, including Chrome, Firefox, Safari, IE 11, and Edge. This ensures a consistent and reliable user experience.

5. Ongoing Support and Updates: With over 100,000 active installs and a high 4.8-star rating, the Popups for Divi plugin has a strong track record of user satisfaction. The plugin has also received regular updates, with the latest update occurring just a month ago, indicating the developer’s commitment to maintaining and improving the plugin.

6. Valuable Educational Resources: The plugin comes with a comprehensive six-day course that teaches users everything they need to know about creating, customizing, and leveraging the plugin’s features. This educational content can be a valuable resource for users looking to get the most out of the plugin.

1. Versatile Popup and Notification Bar Builder: The Depicter plugin offers a comprehensive solution for creating engaging popups, notification bars, and more. With a variety of pre-built templates and advanced customization options, you can easily design eye-catching popups to capture your audience’s attention and drive conversions.

2. AI-Powered Capabilities: One of the standout features of Depicter is its AI-powered capabilities, which allow you to create sliders, popups, and notification bars in seconds. This AI integration can save you time and effort, making it a great choice for users who want to quickly enhance their WordPress site with compelling popup features.

3. Lightweight and SEO-Friendly: Unlike many plugins that can slow down your website, Depicter is designed to be lightweight and SEO-friendly. This ensures that your popups and other content elements are optimized for search engines, helping to improve your site’s overall performance and visibility.

4. Widespread Popularity and High User Satisfaction: With over 100,000 active installations and a strong 4.7-star rating, Depicter has proven to be a trusted and reliable plugin among WordPress users. The plugin’s responsiveness to recent issues further demonstrates its commitment to providing a high-quality experience for its users.

5. Extensive Features and Compatibility: Depicter offers a wide range of features for creating sliders, carousels, popups, and notification bars, including responsive layouts, advanced animations, parallax effects, and dynamic content integration. Additionally, the plugin’s compatibility with popular page builders like Elementor, Divi, and Beaver Builder makes it a versatile choice for seamless integration into your WordPress site.

We recommend the Depicter plugin to users looking for a powerful and flexible popup solution that can help improve user engagement, boost conversions, and enhance the overall experience of their WordPress website.

1. Versatile Popup Options: Popup Builder offers a wide range of popup types, including free options like Image, HTML, and Subscription Popups, as well as premium features like Video, Exit Intent, and WooCommerce Popups. This variety ensures you can find the right popup for your specific marketing and lead generation needs.

2. Ease of Use and Customization: The plugin is designed to be user-friendly and intuitive, with no special coding required. You can easily create and customize your popups, adjusting elements like background, borders, overlays, and text to match your brand’s style.

3. Robust Integration Capabilities: Popup Builder seamlessly integrates with popular WordPress plugins like WooCommerce, MailChimp, Contact Form 7, and more. This allows you to enhance the functionality of your popups and streamline your marketing and lead generation efforts.

4. Proven Popularity and Satisfaction: With over 200,000 active installs and a 4.7-star rating, Popup Builder has clearly resonated with WordPress users. The plugin’s responsiveness to resolving issues in the last 2 months further demonstrates its commitment to providing a reliable and well-supported solution.

5. Powerful Targeting and Automation: The premium version of Popup Builder offers advanced features like location-based targeting, behavioral triggers (such as exit intent), and lead nurturing capabilities. These tools help you deliver the right popup to the right user at the right time, maximizing your conversion rates.

We recommend considering Popup Builder as a comprehensive and user-friendly solution for adding high-converting, customizable popups to your WordPress website.

1. Extensive Popup Functionality: The WordPress Popup plugin offers a wide range of popup types, including subscription forms, video popups, contact forms, and more. This flexibility allows you to create eye-catching and high-converting popups to engage your website visitors.

2. Ease of Use and Customization: Even if you’re not a tech-savvy person, the plugin’s user-friendly interface and variety of customization options make it easy to create and manage your popups. You can choose from pre-designed templates or create custom content from scratch.

3. Comprehensive Popup Control: The plugin gives you the power to control when, where, and how your popups are displayed. You can set triggers like page load, click, hover, exit intent, and more, as well as schedule popups to appear at specific times or frequencies.

4. Strong User Ratings and Recent Updates: With over 40,000 active installations and a 4.7-star rating, the WordPress Popup plugin is a popular and well-received solution. The plugin is also regularly updated, with the team resolving 15 out of 16 issues in the last 2 months, ensuring a reliable and up-to-date experience.

5. Integrations and Advanced Features: The Pro version of the plugin offers a range of integrations with popular email marketing services, as well as advanced features like A/B testing, user role permissions, and the ability to restrict popups by country or device. These features make it a comprehensive solution for your popup needs.

6. Comprehensive Support and Community: As part of the Ays Pro Team’s plugin ecosystem, the WordPress Popup plugin comes with the benefit of a dedicated support team and a growing community of users. This ensures you have access to assistance and resources should you encounter any issues or have questions.

1. Powerful Popup Builder: OptinMonster offers an easy-to-use, drag-and-drop popup builder that allows you to create a wide variety of popup types, including lightbox popups, floating bars, slide-in popups, and more. This flexibility ensures you can capture leads and drive conversions in the most effective way for your specific needs.

2. Extensive Popup Templates: With hundreds of pre-designed popup templates across various industries and use cases, OptinMonster helps you save time and create visually appealing popups without the need for a designer or developer. This makes it easy to get started and quickly optimize your lead generation efforts.

3. Advanced Targeting and Personalization: OptinMonster’s smart page targeting and behavior-based personalization features allow you to display targeted popup messages to your visitors based on their location, browsing behavior, and past interactions with your site. This helps ensure your popups are relevant and effective in converting visitors.

4. Seamless Integrations: The plugin seamlessly integrates with over 30 popular email marketing services, CRMs, and ecommerce platforms, making it easy to connect your popup campaigns with your existing marketing tools. This streamlines your lead generation and customer acquisition efforts.

5. Reliable Analytics and A/B Testing: OptinMonster provides accurate popup analytics and robust A/B testing capabilities, allowing you to measure the performance of your campaigns and continuously optimize them for better results. This data-driven approach helps you make informed decisions and maximize your popup’s effectiveness.

6. Exceptional Customer Support: With over 600 five-star reviews on WordPress.org and a responsive support team, OptinMonster is known for its excellent customer service. This gives you the confidence that any issues or questions you have will be addressed promptly, ensuring a smooth setup and ongoing use of the plugin.

1. Versatility and Flexibility: Popup Maker is praised for its incredible versatility, allowing you to create any type of popup, modal, or content overlay imaginable for your WordPress site, including email opt-in popups, exit-intent popups, lead generation popups, and more.

2. Ease of Use: Users rave about how easy it is to make popups with this plugin, with one reviewer saying, “Love how easy it was to make popups with this!” This suggests Popup Maker has a user-friendly interface and intuitive popup builder tool.

3. Extensive Targeting and Triggering Options: Popup Maker offers multiple ways to trigger a popup, including automatic open, click-to-open, form submission, exit-intent, and scroll-based triggers. This allows you to deliver targeted and timely popups to your visitors.

4. Integration with Popular Form Plugins: Popup Maker seamlessly integrates with a wide range of popular form plugins, such as Ninja Forms, Gravity Forms, and Contact Form 7, enabling you to open or close popups based on form submissions.

5. Robust Premium Features: For users who need advanced functionality, Popup Maker offers over 20 premium features, including exit-intent, popup analytics, advanced targeting conditions, and scheduling, further enhancing your popup capabilities.

6. Strong Reputation and Widespread Use: With over 780,000 active installations and a 4.9-out-of-5-star rating, Popup Maker is a trusted and widely-used popup plugin for WordPress. The fact that it has received over 4,200 5-star reviews and had 10 out of 12 issues resolved in the last 2 months suggests it is a well-maintained and reliable solution.