In normal method you can send messages from gmail by login into gmail and by taking compose mail.
But in some times you will be very busy and you have to send a mail from gmail very very urgently.....
here is a method. By using this, the compose mail page will appear directly into the screen.
But this is only for sending urgent mails not for checking your inbox, OK
Lets look how....
Just open your browser......
In the address bar, type mailto: then enter (as in the picture below)
Normally when your following this for the first time the browser ask , In which application the link needs to open...as in the picture below.....
then select gmail and give a tick mark in down side remembering check box.
Now the compose window in gmail will open directly with the inbox page.....Try it...
