So what would you have done differently if you had that information? Would you have tried to create posts that you didn't intend to create otherwise? I don't think that's good for the forum nor is it a good reason for the feature requested in the OP.
This identification can at least prevent me from posting on low-quality topic so as to minimize the number of deleted posts without notice. Although I know that we have quality assessment criteria for topics that are set individually, but sometimes I feel I have to quote something there "on low quality topics" and issue opinions scientifically and also based on experience with the aim of correcting the opinion of user who are wrong .Detecting deleted posts is pretty much impossible without rescanning user's post history so I doubt that any third-party parsers would be able to do it. It's certainly not scalable. Might be done as an on-demand service ("show me how many posts I had deleted this week") but that's not much better than simply keeping track of your post count.
Actually I am not interested in using third-party services or anything to find out about deleted posts without notice, because so far I just want to continue to improve the quality of posts and make them useful for other users. I have received many scorns from many users in the past regarding the quality of my posts, and now I am in a transition to a better direction. Thank you for answering my question.but that's not much better than simply keeping track of your post count.
Right, this is the easiest way to find out. 