The Subscription Manager add-in for Microsoft Outlook 2000/XP/2003 is designed for automatic adding/deleting subscribers to/from Outlook mailing lists based on special e-mails from them with the commands in Subject field. SUM is capable of processing 'subscribe', 'unsubscribe', 'confirm' and 'help' requests; after processing, addin sends the reply based on general and easy to customize Outlook templates. SUM support almost features of standalone list management products. New in this version: SUM uses Windows installer. Several minor bugs are removed.