Block logging in to consumer accounts
Block adding consumer gmail accounts after logging on. Controlling the chat function can be done within the domain is easy to regulate, but when users are able to add an account after login they are able to use the consumer chat and hangouts during school time.
Thanks for providing feedback on new feature suggestions. While we don’t have it as a specific feature, you can accomplish this by adding the following sites to your custom blacklist:
Please keep in mind that if you have Google.com added to your Whitelist this workaround will not work.
Hope this helps!
Jeffrey Thweatt commented
You can block consumer gmail accounts by adding the switch accounts page to your blocked pages in the admin console without using GoGuardian at all.