Thanks for your wishlist request.
There are logfiles in /var/log/unattended-upgrades/ so as a workaround
you may use something like logwatch to see the actions there.
I agree though that there should be a optional mail notification.
** Changed in: unattended-upgrades (Ubuntu)
Importance: Untriaged => Wishlist
Assignee: (unassigned) => Michael Vogt
Status: Unconfirmed => Confirmed
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mail a report of upgraded packages to the root user
https://launchpad.net/bugs/51136
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