I wonder if this is a broken functionality just on the stack exchange that I'm part of. I've subscribed to ethereum.stackexchange.com and I have three watched tags
ethereum-classic and I've been watching them since mid-October 2018 but I have yet to receive any emails about new questions asked with those tags in it. Checking those tags manually shows that they are being used for asking questions on the site.
I guess the email functionality isn't working? Not sure what's causing this.