Currently, the "CC User Groups" picker in the Email step does not display or allow selection of inherited user groups that originate from the Account scope and are inherited into Organization or Project scopes. Only user groups that are created natively within the current Organization or Project scope are available for selection.

This behavior is inconsistent with other parts of the Harness platform, where inherited user groups are visible and can be managed successfully. As confirmed during discussions with Harness Support and Engineering team, inherited user groups currently do not appear in the Email step picker and supporting them would require a product enhancement.

This limitation creates operational and security challenges for organizations that centrally manage user membership through Account-level Active Directory synchronized user groups. Since inherited copies cannot be selected in the Email step, customers are forced to reference the original Account-level user groups directly. In webhook-triggered pipelines that execute under Service Accounts, this may require additional account-level permissions solely for user-group resolution.