This tool simplifies the management of external user accounts in Office 365, making it easy to share content and users granted access to a company’s SharePoint online site, but are not licensed within that organization.
An external user is someone who has been granted access to your SharePoint Online site but is not a licensed user within your organization. Examples of external users are partners, customers, clients, volunteers etc. – anyone who does not have a company email domain.
Single user invites only
Expires after a certain amount of days
Active or disabled/delete
No custom properties
No hierarchy information
No use of groups
No association of email necessary
Single user invites or bulk creation
Add users to groups
User self-service password reset