How do I label public group emails?

How do I label public group emails? For example, if someone sends an email to my support group, all the members of that group will receive the email. If a member responds to that email, the other members of that group would not / can not see/know that. So is there a way to tag/label emails or something so an email isn't answered by different people as a result of people not being aware that someone already answered it?