Like Internet forum (message board), email (Electronic mail) has been active from the beginning of Internet until now. As a result, we all rely on email for our work and communication to some extent. Thereinto, the free, powerful and friendly Gmail has always been the leader with the most users in the world. But even so, using it on computers and mobile phones has many inconveniences. For instance: all web browsers should enable JavaScript and Cookie features; sometimes you may inadvertently shut down an email page you are editing inside; and no one likes to use Gmail in the browser on a phone all the time.