I wish we would treat cyberspace analogues of established property with the same respect given to the original. For example, your e-mail inbox is the online equivalent of your mailbox. Yet, one being "on your lawn" and the other "at Google's data-center," all bets are off. While I believe the Supreme Court should do better job at explicitly addressing this (for instance, "responsible expectation of privacy" establish…
The Sixth Disctrict court of appeals did address this directly in US v Warshak [0]. What this scare article does a good job of is confusing the reader. Unopened email left on a 3rd party server for longer than 180 days was considered discarded or abandoned property. Discarded physical property has never retained a reasonable expectation of privacy (for instance, the police are free to dumpster dive once your property…
From Wikipedia [1]: "Property is generally deemed to have been abandoned if it is found in a place where the true owner likely intended to leave it, but is in such a condition that it is apparent that he or she has no intention of returning to claim it."
I'm winging it here, but Gmail could have an optional feature to prompt every three months "do you claim your mail from January 2005 to December 2012?", and just answer yes every time. Then Google could respond to be subpoena that the user has no mail that has not been claimed in 180 days.
Any lawyers here who can come up with something more solid?
[1] http://en.m.wikipedia.org/wiki/Lost,_mislaid,_and_abandoned_...
(Be nice if you had some contact info on your profile)