Would you kindly look at the idea of creating an option to create DRAFT emails (not marketing emails), where your superior can first check the email before it has been sent to the client?
This would be normal emails, like requesting shipping information from a client, or answering a question they might have about a product we are selling.
If one is a junior team member and we need the junior to contact clients our our behalf, but we want to check the email for lets say grammar or spelling mistakes before the email is sent out?