Firstly, let's get this thread over to the right place, since your question really isn't about running Windows on your Mac, but more about a challenge with switching from Windows to Mac.
Secondly, I guess I'm wondering what you're planning to use for Email on the Mac, as the answer will depend on it. For example, if you intend to use Outlook for Mac, it's going to be a different than if you're using the built in Mail program that comes with every Mac.