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Since 2004, Gmail has become the world's
email provider. More than 1.7 billion people use
. That's 20 per cent of the world
. Around 45 per cent of email users in the USA use it. Over the
, Google has increased its free storage to 15 gigabytes and has added many new
. One of these is a one-click unsubscribe
to keep unwanted mail away. Another feature is an "undo send" button. This allows
to stop a mail from being sent after clicking "
". The PC Mag website said Gmail is an important
of life today. It wrote: "Gmail is so embedded in so many people's lives that hardly anyone thinks much about it." It is likely people will use it
.