@Pstork1thanks, that kind of helps. Here is our situation - we have a company we have subcontracted to handle various HR functions like benefits administration. They use their own email addresses not on our domain - and have done so for a long time now, so the habit is ingrained. I would like to create a flow that routes to them and CCs the appropriate personnel in our office of the CFO. Is this something I can do? Or, is there a way to specify exceptions (e.g. whitelist) certain email addresses?
Or, is it necessary to assign them an email address on our own domain?
Or, better yet - perhaps we could create a group in our domain, and route to that group, but put their (external) email in that group?