To compose and send a message
From the Home screen, tap Google folder
> Gmail 
> the Compose icon 
(at the bottom-right
corner of the screen).NOTEIf you set up more than one Google Account on your phone and want to send the message from a different Google Account, tap the current Google Account (at the top of the screen), then tap the account you want to use.
Enter a recipient’s address.
As you enter text, matching addresses are offered from your Contacts list. You can tap a suggested address or continue entering text to enter a new one.
Tap To
, then tap Cc/Bcc to copy (normal or
blind copy) recipients, if necessary.Enter a subject for the message in the Subject field.
Enter your email text in the Compose email field (below the Subject).
Tap
, then tap Attach file if you want to add an attachment to your
Gmail message. You can also tap Insert from Drive to insert files from Google Drive.Tap the Send icon
to send your message.
If you aren't ready to send the message, tap the Menu icon 
(at the upper-right corner of the screen), then tap Save
draft.