As a normal Uploader, flagged posts should be something that I know about as they affect my upload ratio. A dmail or event flag (like the one shown if one has PMs waiting) would only help. Whether it comes after or before a post is deleted us unimportant - the fact it comes is what is important, especially if the point of flagging is to highlight an issue that needs to be corrected.
If it comes a month or five deletes later, it's useless.