Say user A posts a comment, B replies harsh to it. A deletes the comment and C decides from B's reply that A deserves better and replies @A. Will A be notified?
If this is an open question: I need two volunteers, one (A) to post a comment to which I (B) will reply which (s)he then will delete. The second volunteer (C) will then deduce from my @reply A's username and also reply. A has to check back later to state whether (s)he was notified.