Here are the steps:

1. In the Admin console Go to Apps > G Suite Gmail > Advanced settings.

2. Scroll to the Spam section, hover over the setting, and click Configure.

3. Enter a unique name for the setting

4. Check the Bypass spam filters for messages received from addresses or domains within these approved senders lists box.

5. Click Use existing or create a new one, enter a new list name, and click Create.

6. Hover over the list name, click Edit, and then click Add.

7. Enter domain name ‘’ or add email address.

8. Save