Integrates Mailchimp with OSCommerce so that when your customer creates an account (for the checkout process), if they tick the Newsletter box, their first name, last name and email address are automatcially sent to your Mailchimp mailing list using the Mailchimp API
When you use Mailchimp to send a campaign email, it sends a unique URL to every customer. If a customer clicks on the link and then buys something from your site, the product and all the finance values are sent to Mailchimp which analyses it. You can see how many people opened your campaigns and clicked the links, plus instant ROI results for every email campaign you send.
This code also supports CRE Loaded and LoadedCommerce (6.2-6.5)