I want to have a email address such as PresidentStateUnion@xxx.org. And have any email to that address redirected to the President's real email addr. So as not to show his personal addr on the website. I am a novice to this add-on to Joomla 4
Is that possible with ACYmailing.

AcyMailing is not a tool that can provide such feature

It is a tool to handle newsletters, newsletter lists and subscriptions