A. Windows 2003's mail capabilities are very basic and best suited for situations in which only limited send and receive abilities are needed. Exchange 2003 is a superior solution that's scalable for the largest enterprise and offers improvements in every area, including

  • IMAP/Messaging API (MAPI) support
  • Web client support
  • Outlook client feature support
  • mobile device access
  • fast backup and restore options via multiple database
  • single instance storage (i.e., Exchange stores just one copy of a message that's sent to multiple people)
  • online and offline backups
  • advanced administration tools
  • administration for an entire organization
  • integrated virus scanning
  • anti-spam capabilities
  • clustering