No, the software doesn't support Mac OS. There is no information on the official website.
"EmailMerge version 3.x is fully compatible with Windows 8. All versions of our software work with Windows 95, Windows 98, Windows 2000, Windows XP, Windows 2003, Windows Vista, Windows 7 and Windows 8."
You can just run the application in Mac with Parallels, VMWare or Bootcamp. All of these applications allow you to install Windows as concurrent session with Mac or separate installation on disk (Bootcamp). This is the only way to get it work.