Why just admin questions are notified by mail?

edit

After a lot of hours I found this:

../askbot/askbot/models/post.py

    if askbot_settings.MIN_REP_TO_TRIGGER_EMAIL:
        if not (updated_by.is_administrator() or updated_by.is_moderator()):
            if updated_by.reputation < askbot_settings.MIN_REP_TO_TRIGGER_EMAIL:
                for_email = [u for u in notify_sets['for_email'] if u.is_administrator()]
                notify_sets['for_email'] = for_email

And I noticed of this configuration parameter in /settings/MIN_REP/

Trigger email notifications
Users with smaller reputation will not be generating email alerts
Default value: 15

I changed to 1, and my new questions of new users are being notified.