there is no way and there likely never will be
It's possible to set up a server to monitor forum posts/pages
I'd say it isn't, actually. with the number of pages you'd have to check, by the time you're checking them often enough to get notifications in a reasonable amount of time, cloudflare will have blocked you
I'm heavily experienced in scraping data from websites which is simply what this is. So with that said, it actually is possible.
Glass actually has an incomplete system to do this. I started on the feature and scrapped it as I didn't think it'd be very popular, although some of the code is still there.
You cannot do this in-game, because the Blockland site is now in https:// form. Blockland cannot handle https:// websites.
just make a bot that looks at https://forum.blockland.us/index.php?action=recent every few seconds