Can the Memberspace create account functionality duplicate with Box, so when users create a memberspace account on my website they also have created a Box account/login?
Then when they click on the file request link on my website or a shared linked on my website they will be automatically redirected to Box and they will know its the same log in to use as memberspace (or will still be logged in via the redirect)
This will allow my customers to freely upload, edit, view etc Documents that are specifically for them (hosted on Box) but only accessible through a Memberspace login.