Share a file once

When a user shares a file with an email address which is not registered on Cloud, they are taken to the "invite page" https://apps.na.collabserv.com/manage/subscribers/inviteGuests/input , and asked to fill in the first name and surname. Once this form is submitted and processed, 2 emails are sent to the address. 1 to register the account (accept ToU, set password, & lang preference) and 1 to notify of the shared file. This second email allows the receiver to download the file once (& only once)

This is an enhancement request for:

1. Proper documentation on this process
2. Allow the user to share with out sending any registration email (do not provision the account and place in pending)
3. Improve the UI "error" message where the user tries to download the shared file a second time. Currently it does not state anything about a pending account or registration, only that "access is denied"