A little bit off, not sure if deserves a new topic:
How about “instant email me button”?
I’m just setting up a new discourse forum and being in a sandbox I’d like to hit a button and receive an email for a topic I created so I could test if the “reply via email” is working. A “force/provoke instant notification” button would have been great for me right now.
Then I thought maybe this could be an useful feature for someone. No idea why, though! 
In any case, any suggestions for me testing it out?