It would be nice if users could be added to organizations with more advanced rules than just by looking at email domains. For example we have 2 internal organizations where we can use email domains, but would like to add all other users to a separate organization called "External". I can't find any way to do that today other than manually adding the users. A way to do it could perhaps be to use negation - for example a rule that states that users NOT coming from domain Y and X, should be added to Organization "External".