Paolo Gabriele's sentence was reduced to 18 months from three years because of mitigating circumstances, including that Gabriele had no previous record, had worked for years for the Holy See.
Gabriele also acknowledged that he had betrayed the Pope and was convinced, "albeit erroneously" that he was doing the right thing, according to Judge Giusppe Dalla Torre.
Gabriele was accused of stealing the pope's private correspondence and passing it on to journalist Gianluigi Nuzzi, whose book revealed the intrigue, petty infighting and allegations of corruption and homosexual liaisons that plague the leadership of the Roman Catholic Church.
More top news
A third of the Great Wall of China has crumbled away and more is at risk due to reckless human behaviour and adverse natural conditions.
Kauto Star, who won the King George VI Chase a record five times, has been put down, the Racing Post reports.
BBC will no longer be 'the home of the Olympics' after the IOC is swayed by a massive bid.