G Suite Outbound Email Reject for Specific User

Issue: Recently, we got a request from one of our customers to reject outbound emails for a specific user. We initially thought whether it is possible to block outbound emails for a single user. However, G Suite is very powerful and it has some interesting features. We achieved our target by using G Suite content compliance as below. Solution: Step 1: From admin console go to Apps -> G Suite -> Gmail -> Advanced Settings. Step 2: Under Basic Settings go to Content Compliance and click on Configure. Step 3: Add a rule as per below screenshots to block outbound emails. Step 4: Save the configuration and check email sending/receiving status.