You can invite unregistered users, and, if your company has enabled extended collaboration, you can also invite new people to join your social network. You invite people when adding members to a Conversation or wall.
Unregistered users are people who are in your company's directory but are not yet members of Oracle Social Network. When you add people to a Conversation or wall, the word unregistered appears next to the names of unregistered users and a warning dialog alerts you to their unregistered status.
When you add an unregistered person to a Conversation, they receive an email with a link to set up their account.
New users are added using their email address. Depending on the person's email domain and how your administrator has configured user access, the user might get access to all of Oracle Social Network or might be granted limited access.