Hide Google email gadget for certain users
Google provides a way to configure access to Nutshell for certain users. See the following Google help article and Google Blog post on how to do this.
How do you minimize the gadget?
The gadget may be minimized by clicking the hide link in the upper left of the gadget window.

You must not have the gadget linked to your Nutshell account. If it is, you will need to reset your gadget.
Note: Google only updates gadget preferences when the browser reloads. You must minimize the gadget then reload the page for the settings to persist.
Reference: Google support forum post
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