Mail that I want to keep. The folder names will be the same and the messages will be in the same folders. Mail database before your account is migrated. Draft folder items will appear in the inbox. Mail will not migrate with your mail messages to Exchange.
Exchange does support a personal address book and what are called server based rules.
This means that you can have rules for when you are on vacation or out of the office. If you want to migrate your personal address book you will have to print it and manually re-enter the entries into Outlook. With a global directory the need for personal addresses are greatly reduced. Outlook is the desktop client for the Exchange server. Outlook is your window into your Exchange mailbox on the server.