Yes and no. You can set your default settings so that you emails, and you can override that setting on any individual topic. However - the problem is that you will get an email for EVERY post that goes to that thread. Previously we just got one email until we looked at the thread, but now you could have dozens.
To change the default settings - go to Settings/General Settings/Default thread subscription mode
To change for just one topic - when you're in the topic go to the top of the topic, thread tools, subscribe to this thread.