Luckily mailing lists and newsgroups still exist, some newsgroups are even still active. (Mailings lists too of course, but they are generally created for a specific purpose)
They exist, as do mechanical typewriters and bulletin board systems, but most people don't use them. The web "won" long ago, and newsgroups and mailing lists are now mostly a historical curiosity.
Also forums for special interests. (Outgrowth of a bulletin board.)
Some do not even abuse their data and users.