Peter Wooster

This plugin allows editors to request a promo code and optional email address from users to get access to a document and track its usage.
Features for Editors
<ul>
<li>a short code [promo] is provided that will display a form that requests a 
promo code and optionally an email address from your users and then takes them to a url.</li>
<li>a summary of the accesses using this code is displayed to editors by the short code</li>
<li>editors can clear the logging from the short code</li>
<li>there is no back end admin page </li>
</ul>
Short Code Arguments are:
<ul>
<li>code= a string that must be entered access the document, required</li>
<li>document= a url to the document that you want to track, required</li>
<li>name= the name to display for the document, required</li>
<li>email= ‘yes’ to request the user’s email</li>
<li>id= the id on the form tag, useful for CSS, default is ‘promo’</li>
<li>promolabel= the label for the promo code input field, default is ‘Please enter promo code for name’</li>
<li>emaillabel= the label for the email input field, default is ‘Please enter your email address’</li>
<li>liststyle= the style or class for the ul, default is ‘style=”list-style:none”‘</li>
</ul>

Simple Promo Code

A very simple plugin that allows an editor to track accesses to a document by promo code.

aziz3d

PopupNotifix is a user friendly and lightweight WordPress plugin that allows you to create and display highly customizable popup notifications on your website. It’s an effective tool to grab your visitors’ attention and deliver important messages, promotions, or announcements.
With PopupNotifix, you can:
<ul>
<li>Enable or disable the popup globally.</li>
<li>Choose to display the popup on the homepage only or on all pages.</li>
<li>Set a delay for the popup to appear after the page loads.</li>
<li>Customize the popup’s title, content, and appearance.</li>
<li>Embed YouTube videos in your popups.</li>
<li>Choose from multiple templates to match your site’s design.</li>
<li>Add custom CSS to style the popup to your liking.</li>
<li>Select from various animations to make your popup more engaging.</li>
<li>Set a custom width and height for your popup.</li>
</ul>

PopupNotifix

A lightweight WordPress plugin to display customizable popup notifications.

Simple Promo Code vs PopupNotifix