Since Google offers no such feature, I am writing this topic to outline the privacy policy for this group.
By joining the group, Google may make your email address available to the owner of the group (Kee Vault Ltd).
We cannot prevent Google from sharing with Kee Vault Ltd, some or all of the email address, of some or all of the members of this group. However, we will not actively seek out this information.
We will not take any steps to access your personal information, nor copy, store, share, use or process it in any way.
You can leave the group to revoke our access to this information (although of course Google will retain access per their own privacy policy).
Unfortunately joining this Google Group is the only practical method by which Google will permit you to install the beta version of Kee into their web browser so if you are unhappy with the information presented above, your best recourse is to use an alternative web browser.