The Approval Buttons at the bottom will cause some serious confusion and pain points for many users.
We have system notifications which go out to end users to notify they must log in to the system and approve something. Your new version of email is adding a "I Don't Approve." "I approve it" and a "Thank you for the Approval" set of buttons at the bottom. This is NOT good. This will cause much confusion with our end user community who will say "I clicked 'I approve it'" Why didn't you record the approval?"
I have to report this to my IT group and HOPE they can get rid of this before too many start seeing this and thinking this is approving the request. It won't look badly on Microsoft by our people because they don't understand and will blame the central IT folks for this.
[sarcasm}Thanks so much for the additional work. Great Job![/sarcasm]