Using Jetpack 1.2.2 on a WordPress 3.3.1 blog (self-hosted) with the Jetpack Subscriptions widget in sidebar.
This morning, I updated a large number of old posts - using the "quick edit" feature on the posts page in the dashboard, and specifically enabling comments for the posts one at a time, then clicking update.
It seems to me emails went out to all the subscribers listing these as new posts? (Or possibly they were only sent to me as the admin?)
Just tried replicating the behavior with additional email address subscribed not as admin - but now neither my admin address nor a normal email address is getting any notifications.
So, the question is, is Jetpack supposed to send "New Post" notifications when a post is updated?