Man, I didn't know about this, trying out now. I was old user of the herokuapp and it stopped working months ago. I also don't use Telegram so I was without notifications for a long time! Thanks!!
I use this everyday
I don't have telegram as well, and I think using telegram for forum notifications is too invasive (considering privacy).
I don't like the idea to link my phone number to my forum ID, and you need a phone number to use telegram.
I was using herokuapp and it was the best because it gives you alert on windows, real time, very easy to see the next day too but so far this tool works perfect too, it is a nice list on a bookmarked url.
Telegram was too noisy for me, and personally the source of a lot of pain from ICO days so I quit all social media a few years ago sort of like a personal intervention because it made me stressed and worried all the time.
I know these days everyone must use phone app for everything but I really prefer tools like this, a bit old school but very good for, as you say, privacy!