If you want to set up slrn -- as suggested in another post -- I can help. It's not particularly intuitive. I first used Claws Mail and Thunderbird and then set up slrn.

I still use Thunderbird most often.

If you are comfortable with text-based interfaces, I'd suggested getting slrn to see what Usenet was like back in the days when most of us only had text terminals.

If you are an Emacs user, Gnus is another way to get the old school experience.

Another text one that was popular is tin, which I've never used but which, like slrn, is still maintained and updated.