Under My Stuff | Watched Lists, you can view items you have set up to watch: Forums; Topics; or Users.

To add an item to your Watch lists, click:
<> Forum Options at top left within a forum
<> Topic Options at top left within a topic
<> User name in a post.

I don’t think this bulletin has an option to email, but maybe the Adagio Guru, Bruce Gardner, can set me straight.