Business people discussing something over a tablet

Block Any Gmail Account on a User, List, and Group Level

GAT Shield has a feature to allow Admins block access to personal…
bulk user accounts

Bulk Add-Update-Remove Google User Accounts

We have added a bulk import/change/deletion (add-update-remove)…
Employee working on white laptop

Block Whole Categories of Websites with GAT Shield

GAT+ Shield - Sites Access control, Admins can block whole categories…