Identifying more shoppers, as early as possible, is the single most important thing you can do to improve the effectiveness of real-time marketing. In addition to the Fresh Relevance tracking script you can use the following techniques to increase the number of identified customers.

Via email

Add the Email ID to link URLs in your Bulk Marketing Emails and Load Person Data by FTP

Merge a unique reference for your contacts/subscribers to the links in your email campaign by including a query string with the ESP's unique ID for each contact. This identifies who clicked the link.
Example:

<a href="https://shop.example.com/latest?eid={Platforms unique id for the conatct}">Latest offers</a>

In Fresh Relevance, go to Settings|Query Fields and add eid :

Export your subscriber data from your ESP, choosing the email address and eid fields, and choose where to load it from, so Fresh Relevance can correlate the eid values with the contacts. Fresh Relevance can identify shoppers based on a mapping file from your marketing or CRM system. Files can be retrieved from an FTP server and automatically processed so that links with an ID in the URL can be associated with an email address. Learn more about Import Person Data documentation .

Add email address to URLs in your bulk marketing emails from your ESP

Add the following query string to every link in your marketing emails using the merge fields.

&e={email address of contact} or preferably if you have access to a RC4 encrypted version of the email as it is more secure: &e={RC4 encrypted email of contact}

Whenever anybody clicks through from one of your marketing emails to your eCommerce site, they will be recognized.

Via your website(s)

You can pass the email address from your website users to Fresh Relevance. After site visitors login to your website, you can (and should) pass details of their identity to Fresh Relevance. This usually requires simple JavaScript such as:

Use the $TB.setEmail call in the JavaScript API.
Use the $TB.setDetails call if you want to pass a base64-encoded email address or a RC4 encrypted email address in the JavaScript API.