I have this setting enabled so that posts I make will get added to my watch list. Is there a setting where I can be notified via email if any topics that I have commented on have been updated? (or I guess perhaps adding them automatically to my watch list might work.)

"Default 'Add Topic to Watch List' to true/checked for any post you make?"

See the following. I have the first marked YES to get email notified and the second to NO because I don't need notification on my own created posts. I will just add the ones I want to Watched.

I've got both of these currently checked. I'm looking for some way to be notified of a topic that I didn't originate, but decided to jump in on the discussion. Would like to get an email when there are replies or further discussion, but not have to explicitly put the topic on my watch list. Is that possible?