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.

fkfaisalkhan007

mohammadhanif

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Sharik Khan

Pathhan

Alexander

FARAZFRANK

A WP Life

Make easy popup boxes on your WordPress site. Show important news, run an offer, or capture new leads. This popup builder places content in a nice modal.
Create a custom popup maker fast. It uses simple CSS settings. Show images, videos, shortcodes, and more. It is fully responsive on all devices.
<h3>Smart Popup Maker for News and Sales</h3>
Use this popup builder to keep readers on your site. Drive attention to a new special offer. Share urgent news updates fast.
<h3>Key Free Features for Your Offer Popup</h3>
<ul>
<li>Two Trigger Modes — Open on page load or on button click.</li>
<li>Open Delay Timer — Set a delay before the popup appears on screen.</li>
<li>5 Color Presets — Pick blue, red, green, purple, or orange themes.</li>
<li>4 Animation Effects — Fade & Scale, Slide, Side Fall, and 3D Flip.</li>
<li>Overlay Opacity — Soften background dimming from 0% to 100%.</li>
<li>Edit Button Text — Change popup button text, size, and color fast.</li>
<li>Shortcode Maker — Place your modal popup anywhere with one code.</li>
<li>Mobile Ready — Your popup looks good on any screen size.</li>
<li>Embed Items — Show forms, videos, and grids inside the popup maker.</li>
<li>Easy Admin — Simple settings panel built for normal users.</li>
</ul>
<h3>Add Any Item to Your Popup Builder</h3>
<ul>
<li>Media: Rich images, smart galleries, and sliders.</li>
<li>Videos: Embed YouTube and Vimeo clips with ease.</li>
<li>Forms: Load Contact Form 7 and other form tools.</li>
<li>Promotions: Share a unique coupon, sale, or offer.</li>
<li>Social Data: Connect Facebook, Twitter, or social streams.</li>
<li>News Feeds: Highlight latest news to visitors right away.</li>
</ul>
<h3>How To Use This Free Popup Builder?</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 — Popup Maker & Popup Builder

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

A fast popup maker to show news, offer, videos, forms, and more. Easily create an amazing popup and modal boxes.

NS WordPress Custom Alert Popup Box vs Modal Popup Box — Popup Maker & Popup Builder