A new feature has been added by Sage in Sage 300 previous versions to setup an email configuration globally and use it for various email sending process without entering the same information repeatedly. Now Sage has introduced an additional option to setup multiple email addresses which will be sent as a carbon copy (cc).
You can refer to our blog link to for detail information on setup of email configuration: New Feature with Sage 300 v2017 Patch 2 for Email Settings on Company Profile
New Stuff: How to change ADMIN password
Navigate to “Common Services → Company Setup → Company Profile” to open the setup screen. 
Once the screen is opened, click on Email tab where you can find “Send Copies To” field which allows you to input an emails address. The email address entered in this field will receive a copy of an email sent for the customer(s) and vendor(s).
Multiple emails addresses are supported by this feature and needs to be separated by semicolon (;). Refer the tool tip at the top-right corner of the “Send Copies To”.
Save the changes 
So, user can receive copies of emails that is sent to customers and vendors which will help user to store the backup of the sent emails for any internal use/records and also provides a confirmation of an email delivery.
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