Notification by mail for new status in a group

Hello,

I am trying to figure out if there is a way to send email whenever a member writes a new status inside a group and for all the members who belong to the group?
It works very well when a discussion is open by a member.
I am starting this new website and if people do not receive email to tell them that a new status has been posted in one of their group then I will have to ask them to publish only discussion but no status.
What is strange is that whenever a status is commented then it is possible to have an email notification.

thanks
Marco