This article really only skims the surface of what Mail can do. There’s a whole other article that could be spent going over how Mail handles multiple e-mail accounts, what the Connection Doctor tool can do for you, and how to synchronize your Mail messages and address book on your computer with a .Mac account for easy access while traveling.
Spending a little time reviewing Mail Help (Command+?) is definitely worthwhile because Mail has a lot of depth, and the more you learn, the more useful you’ll find Mail to be. Above all else, though, Mail provides good ways to filter, organize, and review your messages.
Although often looked down upon as a lightweight e-mail client compared with Eudora or Entourage, many Mac users will find Mail plenty powerful enough to get the job done.