SERVICE_UI_ALWAYS

const mapi.SERVICE_UI_ALWAYS;

The message service must always display its configuration property sheet. If SERVICE_UI_ALWAYS is not set, a configuration property sheet can still be displayed if SERVICE_UI_ALLOWED is set and valid configuration information is not available from the property value array in the lpProps parameter. Either SERVICE_UI_ALLOWED or SERVICE_UI_ALWAYS must be set for a property sheet to be displayed.