What are the similarities between Outlook and Outlook Express?

Both Outlook and Outlook Express handle the basics of Internet mail, including an address book, message rules, user-created folders, and support for POP3, IMAP, and HTTP mail accounts. Both were developed by Microsoft and so have a somewhat similar appearance. Both contain the word “Outlook” in their names. Believe it or not, that’s just about all they have in common. For further information, please visit the below Microsoft web link:

http://www.microsoft.com/windows/ie/community/columns/outlookvsoe.mspx