Gmail was 20 on Monday. It started on the 1st of April 2004. It offered 1 gigabyte of storage for free. Other email companies only gave 15 megabytes. Gmail quickly became a "must-have" tool. It became very popular. 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 a one-click unsubscribe button. It also has an "undo send" button. The PC Mag website said Gmail is now an important part of many people's lives. Maybe people will use Gmail forever.