This means that all messages will be encrypted as they travel within the company's data centers, preventing NSA surveillance agencies from intercepting them.
According to The Verge, Google said this news became “a priority after the revelations of former NSA technician Edward Snowden.
"Today's change means no one can read your messages that fly back and forth between you and Gmail servers – it doesn't matter if you're using public Wi-Fi or your computer, phone or tablet," said Nicolas Lidzborski, who leads IT engineering. Gmail security.
"While you are reading, writing and checking messages, there are tons of security measures that work quietly to keep your email safe whenever you need it."