How to configure service so that nagios would only send notifications to email in case of warn or crit states, but wouldn't change status in nagios?
I don't think what you are describing is possible. In fact, I can't really understand why one would want to do what you are trying to do.
notifications are triggered by a nagios status change. If you need a fake nagios interface to show somebody just create it with lynx and pipe the oputput in an HTML page.
I have solved problem. Thank you all.