Which version (s) of Microsoft Outlook does SendGuard support?

SendGuard works with Outlook 2000, 2002/XP, 2003 and 2007. It does not work with Outlook Express.

(Account Guard feature is not supported in Outlook 2000 and 2002. 'Automatically detect my email address from the email accounts linked to my Outlook' does not support Outlook 2000)