Clients
Clients are your customers, the people or companies whose websites you manage. A client can be assigned to websites and holds an email and a phone. Contacts, in their own section, are the recipients of notifications and are never assigned to websites.
A collaborator manages only the clients they created, while an owner or an administrator manages every client of the organization. A contact id on a client endpoint answers 404, and a client id on a contact endpoint too.
