How do I import Outlook Express mail and address book data into OS X Mail?
To import your mail from Outlook Express 5.x into Mail, launch Mail and go to File > Import Mailboxes… > Outlook Express. Outlook Express will load in the Classic environment and you will be prompted for which folders you would like to import. These will then appear as subfolders within the Mailboxes panel. To import your address book from Outlook Express 5.x into Mail, follow the instructions below…