ListKing is an application that allows you to use Microsoft Outlook as a Mailing List Server. When run, ListKing automatically scans your Outlook folder for relevant messages and processes them, for e.g.: - Subscribe Me- Remove Me- Subscribe john@email.com- Unsubscribe john@email.com- Subscribe john@email.com MyMailingListListKing uses a database to maintain your mailing list and allows you to easily send messages to your mailing list (or a selection of your mailing list).