“Assuming that Texas Governor Rick Perry does not veto it, the Lone Star State appears set to enact the nation’s strongest e-mail privacy bill. The proposed legislation requires state law enforcement agencies to get a warrant for all e-mails regardless of the age of the e-mail.”
This ars article basically states that a law is likely to pass that would require state and local authorities to get a warrant prior to snooping on someone’s email inbox. Keep in mind it doesn’t apply at the Federal level.