I haven't had any emails regarding answers since I changed my e address about a year ago. I don't miss them at all: I can see for myself if I have any responses to my questions.
I always get an e-mail for a reply to a topic I started. Even if I subsequently answer someone else within that topic, I still get an e-mail for my own answer. But I do not have a choice within my profile box to receive e-mails or not.