If you'd like your uploaders' files organized by a piece of information you already know about them - like their name or email address - you can set up the DBinbox uploader to pull off a piece of information from your website and use that as the folder name.
All you need to do is append the email to the URL of the link, like this:
There are a few ways you can automatically accomplish this, but which one is easiest depends on how you're currently storing your uploader's email addresses. A good fallback would be to pull the email address from somewhere else on the page. Say somewhere else on the page you have the user's email address displayed in a span with an id of "email":
You could dynamically pull the email address from this span and append it to your dbinbox embed link like this: