How to monitor not full forum but only replies of my threads?

When I post a new question into this forum then I can tell the forum software to inform me about new postings by email.

Unfortunately emails for ALL new postings in the full forum are sent to me.

I prefer to only be informed about new postings for all MY previous postings (=to my threads).

How can I achieve this?

With the current version of Fusionforge, I am not aware of such a monitoring function.
You could see if the next version of Fusionforge has it or open a request for it.