By default I was getting an email whenever anyone replied to a thread I posted in. This was nice until a thread got active and it started spamming me with lots of emails for each post. Here’s how you can turn this off - just uncheck the box indicated under your settings (icon at top right, then gear symbol under it).
You can still look at your notifications by clicking on your icon at the top right to see responses, likes, etc, when you visit the site. That’s enough for me.