apple-device-management-mdm/examples/declarative/status/account.list.mail.outgoing/example2.json

{
    "account": {
        "list": {
            "mail": {
                "outgoing": [
                    {
                        "identifier": "I4G34521-LI44-0H00-GK73-789012345678",
                        "_removed": true
                    }
                ]
            }
        }
    }
}