If your post is directly deleted, you receive a notification via PM. But does it behave the same if an entire thread (not created by you) is deleted where you wrote a post which is deleted along with the thread? I am wondering this as I wrote a post on a thread yesterday and the thread is no longer available today but I did not receive a notification about the deleted post.
You don't receive notification if threads are trashed.
Some spammers or trollers create a lot of topics and abandon it for other posters to spam. You need to know who they are and avoid those topics. Even their topics are not trashed, they will be moved to off topic and your posts will be invalid (for post count in your campaign).
Cryptoboss2020 is such a spammer, troller.
Don't join his topics.
Don't feed his troll.
Don't waste your time to make posts and won't get any count.
That user
https://bitcointalk.org/index.php?action=profile;u=2835857