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.

bielefeldt

With the Response Promotion Redemption plugin installed you will have the option to include the functionality onto a page or on a custom content type page called Promo.
You will enter the Partner Portal URL (the url to which the promotion is allocated), the send from email address(the email in which the user will receiver their partner code from), select the partner type (redirect, query and soon cross domain mysql connection) the options that go with each are self explanatory.
Then you will upload your CSV file with your codes and the corresponding partner codes, this will create a table on the db for tracking used and unused codes. There is a download link for an example CSV file for you to populate with your own codes.
When a code is used then the user name and email will be stored in the db and displayed in the individual edit page/post screen. From there you can download a CSV version of your code db with current user info.
Note: once you upload a CSV you cannot change it, mainly be cause if you uploaded another csv it would over right your currently used codes and user info(the plugin won’t allow you to do that by design).
The plugin also creates a short code selector in the WYSIWYG editor so theta you can embed the form into the actual page/promo. The plugin takes it from there.
<h3>Arbitrary section</h3>
For more information about Response Promotion Redeemer or Response Marketing, please contact us at http://thepowertoprovoke.com/lets-talk/
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Response Promo Redeemer

The Response Promotion Redemption plugin allows you to create partner promotions with list of your promotion codes and your partners.

Simple Promo Code vs Response Promo Redeemer