As of January 31st, I stopped getting any email notifications. My settings are correct. I have logged out and back in. I have checked my email online to see if they were suddenly going to junk, but they don't appear at all. No threads I've participated in ever are showing up in my emails when there is new activity. It was somewhat convenient to get those. Maybe something changed with Spectrum, but not my email address, and I can't fix anything there.