I actually agree with you, I wrote the post not to work on it, but give context and inspire the giants gmail, microsoft and others to do something about it.
38 karma · joined January 23, 2013
Coordination is a major use case of email. Whenever you ask someone to do something, or in another words say send you something - language wise you are making a request - its the same construct as that of a meeting - the action is different.
Like regular verbal communication (instead of messaging) happens over same time. For us thats like water to fish. Implementing a time server function to email systems would create a sync'ed communication system.