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Today, more than 1.7 billion people use
. That's 20 per cent of the world
. Over the years, Google has increased its free
to 15 gigabytes. It has added new
. One of these is a one-click unsubscribe
for unwanted mail. Another
is an "undo send" button. This means users can stop a mail from being sent after clicking "send". The PC Mag
said Gmail is an important
of life today. It wrote: "Gmail is so [fixed] in so many people's lives that hardly
thinks much about it." It is likely people will use Gmail
.