Clarity knows how important marketing and affiliate integration is, and that is why we provide the following: Opt In checkbox presented to user during checkout that enables you to build white list of email address that you can use for email marketing and email blasting. Opt In field stored to database with the customer email address. Many custom dropdown lists, textboxes - Show/hide custom configurable dropdown list displayed to the user during checkout. Useful for collecting marketing data like "How did you hear about us" Cart stores IP Address of user who successfully purchases. This feature enables you to comply with CANSPAM requirements for opt in email marketing. Custom Affiliate Tracker module included with cart Affiliate Tracker saves affiliate id in order table on successful purchase. Affiliates can link to any page on your site and the affiliate tracker module will track affiliate id to purchase. Integrated with STP Systems Multi-Tier Affiliate Manager for CMS. Pay out commissions to your affiliates in a multi-level marketing (MLM) model.