Comment 1 for bug 489004

The email does not know about your personal settings. The email is stating two things,
1) that there is a mailing list, and
2) that there you cna change you subscriptions

Even if you are automatically subscribed, you may choose to not subscribe to this team's list.

nb. I think this whole scenario is crack, I think all team members should always be subscribed to the list, users can leave teams if they do not want the emails. This also means communication teams should not be used in ACLs, but this has always been true.