Today is April Fools' Day. Today is Gmail's birthday. Seven years ago Google announced that it would provide email service. And everyone thought it was a joke. But on the April Fools' Day seven years ago, Google published its email service: Gmail, which shocked everybody. Influenced and led by Gmail, other email service and some other internet services have changed.
We can conclude that Gmail is an evolutionary product and it brings convenience to us and changes our living and internet habits.