Gmail had its 20th birthday on Monday. When it started, on the 1st of April 2004, it changed everything. It offered 1 gigabyte of storage for free. Other email companies only gave 15 megabytes. Some people thought it was a joke because it started on April Fools' Day. However, Gmail became a "must-have" tool. Another reason for Gmail's success is that it searched mails very quickly and was great at filtering spam.

More than 1.7 billion people use Gmail. It now has 15 gigabytes of free storage. It also has new features. One of these is a one-click unsubscribe button. Another is an "undo send" button. Users can stop a mail from being sent even after they click "send". The PC Mag website said Gmail, "is so [fixed] in so many people's lives that hardly anyone thinks much about it." Maybe people will use Gmail forever.