I have 2 different users on the same account. How do you separate the email integration for each user? Each user has their own email address(s) they need to track.
If you are having them send Marketing Emails using the same account then you could set up two different From Addresses for them. You can find information on how to do this here. This will allow you to manage the different from addresses and separate who is sending emails.
If you are speaking specifically about Sales Emails then they should be separate, two different users to make sure there is not overlap on the information. If you wish you can look into creating an Alias email address, located here.
If you are having them send Marketing Emails using the same account then you could set up two different From Addresses for them. You can find information on how to do this here. This will allow you to manage the different from addresses and separate who is sending emails.
If you are speaking specifically about Sales Emails then they should be separate, two different users to make sure there is not overlap on the information. If you wish you can look into creating an Alias email address, located here.