One important step that should be completed before authenticating your email with ClientSuccess is to go in and "Blacklist" all domains your organization may use. For example, if I were a new user and used clientsuccess.com most of the time and successclient.com sometimes, I would want to blacklist both of those domains regardless.
Blacklisting all of your domains regardless of how often they are used is important because it is what helps the ClientSuccess Engagement Module know which emails should be captured publicly and which emails should remain private. We understand all internal emails should remain private and want to protect any sensitive information from ever accidentally being captured.
Blacklisting is very simple. In order to do so, you will navigate to Global Settings, > Apps and Integrations which can be found on the left side of your screen. Once in Apps and Integrations, scroll down on the page until you locate Email Integrations. You will notice that Domains is the very first option under Email Integrations. Click on Settings to the right of Domains where you will then have the option to add all internal domains you may be used for your organization.