Central directories at each server and a local address book controlled by each user, storing names of conferences, users and external e-mail addresses. Reports when your personally addressed messages are read, and when people become members or withdraw from conferences you are the organiser of. Search facilities to search for names in the directories, and to search for old messages using different search criteria like text in the subject, text in the body, conference, author etc. The same message can easily be sent to more than one conference, or both to conferences and additionally as personal mail to some recipients, and no recipient will because of this be shown the message more than once as new. Automatic purging of old messages from data bases.
Users can mark messages to protect marked messages from such purging.
Every user has a personal address book. The user has full control of this address book, there is no automatic purging of it. Every server has a directory of names of users, conferences and external e-mail addresses which have passed that server. There is no central directory and no directory queries via the server-server protocol. Like SuperKOM, KOM can be distributed on several sites.