Ivan, this is what I wrote in another post about comp.lang.fortran:
20 years ago, most universities were proposing a Usenet access via the NNTP protocol (port 119). It has become more difficult nowadays. Personally, I am for several years using a Danish server of the Aalborg University, where I registered freely (see Usenet - dotsrc ), with my Mozilla Thunderbird email client. NNTP is used for reading and SMTP for posting.
Once it is configured in Thunderbird, you use it exactly like e-mail. The only visible difference is that it is a kind of public e-mail! See Creating a Newsgroup Account | Thunderbird Help
I don’t know if other e-mail clients like Outlook still manage newsgroups… Or if some webmail can do it…