A method for enabling users to exchange group 
electronic mail by establishing individual profiles and criteria, for determining personalized subsets within a group. Users establish subscriptions to an electronic 
mailing list by specifying 
user profile data and acceptance criteria data to screen other users. When a user subscribes, a 
web server establishes and stores an individualized recipient 
list including each matching subscriber and their degree of one-way or mutual match with the user. When the user then sends a message to the 
mailing list, an email 
server retrieves 100% her matches and then optionally filters her recipient 
list down to a message distribution 
list using each recipient's message criteria. The message is then distributed to matching users. Additionally, email archives and information contributions from users are stored in a 
database. A 
web server creates an individualized set of web pages for a user from the 
database, containing contributions only from users in his recipient list. In other embodiments, users apply one-way or mutual criteria matching and message profile criteria to other group forums, such as web-based discussion boards, chat, online clubs, USENET newsgroups, 
voicemail, 
instant messaging, web browsing side channel communities, and online gaming rendezvous.