Write mail

First Open this URL in your browser https://mail.google.com and sign in with your Google account

now you can see the compose button which is located on the left side corner so just click on it

you will get this window so in the first section write the mail id where you wanna send this mail and then write the subject in the second section after that write your mail in the body section just like this

and now finally everything is complete so just click on the send button