Some have suggested using google to search threads and posts. May I suggest 1) include a button that will show me all my posts for a given timeframe eg last week, with option last month, last 3-months, everything 2) an auto message to the originator of the thread each time there's a reply to that thread, or one auto message at the end-of-day 00:00 to the originator of any thread that's been replied to that day 3) an option "keep track of this thread" a personailsed list of tracked threads with an option to remove the tracked thread
Prolific posters of new threads can then keep track of responses. Same with threads of interest.
I can example two sites who provide these options if you'd like to view. Message me for details.