If you are interested in using the Virtuous Email Sync feature, and your organization uses G Suite for email, you'll need to have your G Suite Super Administrator whitelist Virtuous as a trusted app. To do so, just follow these step-by-step instructions.
To begin, sign in to the Google Admin Console. From the Google Admin dashboard, go to "Security" and open up "Settings."
Then, go to the "API Permissions" and click on "Trusted Apps."
On the Trusted Apps dashboard, click on the add button (should be a "+" in the bottom right) to add Virtuous as a new trusted application.
Select "Web Application" for the App Type.
Then, enter the Google Client ID for Virtuous, and click "Add."
The Google Client ID you will need is:
Now, you should see Virtuous Email Sync listed as a Trusted App.
Now that you've successfully whitelisted the Virtuous Email Sync, you can start adding user seats. To learn more about managing Email Sync, check out this article.