A family of Microsoft word processing software products for creating web, email, and print documents.
Hi
You get a new email from the system whenever a moderator marks a reply as Answer. I assume the message you're receiving points you toward the reply marked Answer and asks whether or not it takes care of the issue you raised.
The emails come out of order primarily due to time zone differences and timing among the various servers around the world that Microsoft uses. It takes a while for replies to cascade through the whole system.