Define the bottom edge slide-in box with any HTML/PHP globally or for each WP page/post.
As of April 2026, Slide In Popup is a WordPress popups plugin with 10 active installations and a 0/5 rating0. It has been downloaded 9.7K+ times in total. Requires WordPress 2.8.6+ and PHP false+. Available on WordPress.org since 2009. Last updated 16 years ago — may have compatibility concerns. Top alternative: Popup Builder & Popup Maker for….
This plugin will enable you to add any kind of slide in/out popups to your WordPress website.
New widget, called “SlideIn Box”, is added. Each of these widgets can hold one slidein box content, whitch can be any HTML or PHP code. Inside these widgets you will have complete control over your slidein box layout.
New widgets sidebar, called “SlideIn Boxes”, is added, where you should place all defined “SlideIn Box” widgets. After that, they will be selectable from the dropdown menu on Global SlideIn Options page, and inside page/post meta boxes.
| WordPress | 2.8.6+ requiredTested up to 2.9.2 |
| PHP | false+ required |
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