I'm new so take what I have to say with a grian of salt.
That email was VERY aggressive and hostile. I wouldn't put up with it nor dignify it with a response. It was a blatant attempt at controlling you. It also comes across as coming from a very scared and desperate person.
Kudos for not responding.
M:37 W:34 M:4 years T:6 years No Kids A disclosed - 9/1/2010 W asks for separation - 10/19/2010 Moving on - 10/24/2010 A ends (and I believe her) - 12/2010 Content - 3/1/2011 Served - 3/18/2011 D Day - 6/20/2011