There appear to be a few misconceptions here on how Discourse works or I'm
misunderstanding the replies.
1. There are notifications - which mean a thread you are subscribed to or new topics are
either sent to your email or an RSS feed or both.
2. There is mailing-list mode, which allows you to post new topics and reply to others
via your email. That said, some have complained the email isn't formatted correct in
their client. Your mileage may vary - some people like it, some people don't.
3. It's a different solution than hyperkitty - so if you don't like hyperkitty
that doesn't mean you won't like Discourse.
There is already a Fedora instance running, although topics are limited:
Here is the Discourse support forum: https://meta.discourse.org/
Here is Mozilla's: https://discourse.mozilla.org/
If you prefer using an email interface, I would suggest you give the mailing list mode a