NsThemes

Install plugin and create your simple alert popup box. 
You can using a WordPress editor to write or insert a media in alert popup box. 
There are different option you can chose:
<ul>
<li>Show popup at the first visit of the day </li>
<li>Test mode</li>
<li>Contact Form 7 ready</li>
<li>Shortcode ready (you can use any shortcode)</li>
<li>Full control on popup content</li>
<li>Standard WordPress content editor</li>
<li>Set a delay to start popup box</li>
<li>Responsive mobile friendly popup</li>
<li>Insert image in popup box</li>
<li>Choose full width layer background color</li>
<li>Choose full width layer opacity</li>
<li>Set popup background color</li>
<li>Set popup border width and color</li>
<li>Set popup content padding</li>
</ul>
For more information about the PREMIUM version of NS WordPress Custom Alert Popup Box, visit its official page on <a href="http://www.nsthemes.com/" rel="nofollow ugc">NsThemes marketplace</a>.
We test our plugins with many other. If you find incompatibility with one specific plugin, please inform us at report@nsthemes.com.

NS WordPress Custom Alert Popup Box

Easy way to show a totally customizable popup to user or customer. Inside your popup, you can add shortcode, text and images thanks to WYSIWYG editor.

zish

Alexander

mohammadhanif

Sharik Khan

Pathhan

fkfaisalkhan007

FARAZFRANK

A WP Life

Modal Popup Box provides an easy way to add versatile popup boxes to your WordPress website. Display announcements, capture leads, showcase products, or embed any content inside a beautifully animated modal.
<h4>Free Version Features</h4>
<ul>
<li>Two Trigger Modes — Open on page load or on button click.</li>
<li>Open Delay Timer — Set a delay (0–60 seconds) before the modal appears on page load.</li>
<li>5 Color Presets — Blue, Red, Green, Purple, and Orange design themes.</li>
<li>4 Animation Effects — Fade & Scale, Slide Right, Side Fall, and 3D Flip.</li>
<li>Overlay Opacity Control — Adjust background dimming from 0% to 100%.</li>
<li>Customizable Button — Control trigger button text, size, and colors.</li>
<li>Shortcode Support — Place modals anywhere with a simple shortcode.</li>
<li>Custom CSS — Add your own styles for full design control.</li>
<li>Responsive Design — Modals look great on all screen sizes.</li>
<li>Embed Anything — Images, YouTube/Vimeo videos, Contact Form 7, sliders, galleries, and content from any shortcode-based plugin.</li>
<li>Modern Admin Dashboard — Clean, tabbed settings interface.</li>
</ul>
<h4>Embed Any Content</h4>
<ul>
<li>Media: Images, galleries, and sliders.</li>
<li>Videos: YouTube and Vimeo embeds.</li>
<li>Forms: Contact Form 7 and other form plugins.</li>
<li>Promotions: Coupon codes, discounts, and announcements.</li>
<li>Social Media: Facebook, Twitter, and Instagram feeds.</li>
<li>Plugin Content: Anything with a shortcode.</li>
</ul>
<h3>How To Use Free Modal Popup Plugin?</h3>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/jbYiZNe6kr4?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<h3>Premium Version & Demos</h3>
Upgrade to the premium version for advanced features:
<ul>
<li>19 Open Animation Effects — Fall, 3D Slit, Super Scaled, Blur, Rotate, and more.</li>
<li>Advanced Triggers — Exit Intent, Scroll Percentage, and User Inactivity.</li>
<li>Full Color Customization — Header, content, footer, overlay, and close button colors.</li>
<li>Header & Content Styling — Font sizes, alignment, background colors, padding, and animations.</li>
<li>Dual Footer Buttons — Two buttons with individual URLs, colors, sizes, and animations.</li>
<li>Overlay Color Picker — Choose any color for the overlay background.</li>
<li>Open/Close Speed Control — Fine-tune transition timing.</li>
<li>Border Radius & Box Shadow — Rounded corners and shadow depth options.</li>
<li>Close Button Styles — Icon, text, or both with custom colors.</li>
<li>Cookie Dismiss — Hide modal for returning visitors using cookies.</li>
<li>Page Targeting — Include or exclude modals on specific pages.</li>
<li>Scheduling — Set start/end dates for time-limited modals.</li>
<li>Auto-Close — Automatically dismiss the modal after a set time.</li>
<li>Clone/Duplicate — Instantly copy modals with all settings.</li>
<li>
Import/Export — Migrate modal settings between sites via JSON.
</li>
<li>
<a href="https://awplife.com/demo/modal-popup-box-free-wordpress-plugin/" rel="nofollow ugc">Free Version Demo</a>
</li>
<li><a href="https://awplife.com/demo/model-popup-box-premium/" rel="nofollow ugc">Premium Version Demo</a></li>
<li><a href="https://awplife.com/wordpress-plugins/modal-popup-box-wordpress-plugin/" rel="nofollow ugc">Upgrade to Premium</a></li>
</ul>

Modal Popup Box

You set any plugin shortcode in this popup box, it will appear perfectly in the popup box.
 

Any Plugin In Popup

add some actions and filters in key places in the code and it will be very useful.

Somewhat Simple and useful but not for developers.. No Hooks

Create and manage customizable modal popup boxes with CSS animations. Embed images, videos, forms, shortcodes, and more.

NS WordPress Custom Alert Popup Box vs Modal Popup Box