2.2.4.1.1.2.4 ConsumerMailbox

The ConsumerMailbox element specifies whether the user account is a consumer mailbox. It is a required element of the Account element (section 2.2.4.1.1.2) when the value of the Action element (section 2.2.4.1.1.2.2) is "settings".<5> The value SHOULD be "False".