It is highly unlikely that any of these regions will read these messages. If you want to warn them about inactivity or closure, you can get in contact with them in another way.
You'll also find that regional updates in the traditional sense have become increasingly outdated. A region like Australia, which can still be meaningful relationship to have an Embassy with (yes - biased), may not necessarily have the man power to post in Embassies like we or other regions do. But that does not necessarily mean we ought to shut the Embassy.