As KIS, we assign our school-owned iPads Google accounts. But since they’re in our staff domain, they’re automatically added to our allstaff email group and receive all the email sent to that group. We don’t want these emails to show up in the iPad mail app and needed a way to remove those addresses from the group mail list. This is the method we use:
First log into Google Groups Service and find the group concerned (allstaff in our case). Then click on the Manage link.
On the left-hand menu, select Direct add members.
Add the accounts you wish to eliminate from the list.
Select those recently added members and from the Actions menu select Ban.