What product (name and version) are you actually running so that I may move this to that sub-section for better support?
(Moved provisionally to ePO but can move again if asked).
Alert Manager is very end of life, as you mention.
ePO is the management tool for McAfee AV (and more) these days.
One of the things it offers is centralised email notifications, but it also offers a whole lot more besides.