Is it Possible to Automatically Update the User List?

Yes. Elium uses the SCIM protocol to keep your user list up to date. It works with Microsoft Entra ID, formerly Azure AD (Microsoft documentation), and with Google Cloud Identity.

SCIM synchronises the users and groups of your directory with Elium, with their profile data, in real time. You manage memberships in one place, and an account that you disable in your directory is also disabled in Elium.

Check first that your identity provider supports SCIM.