Support Forum

One of my forum members has requested the following:

"What I want is for the Subscriptions button on the forum to contain the topics I've posted in, but to turn off the email notification....I think the option to disable email notifications only applies to private messages. I have it disabled, but I still get email notifications for subscribed threads."

Is there something I need to change on my end (as an admin) in order to change this? Or is there an option that the member is overlooking, perhaps? 

Thanks in advance!