1) Open a new email message by clicking the “Compose” button, or using the shortcut “c”
2) To: You choose who to address the email to
From: *NOTE* This is only available if you have permission to send emails on behalf of another account - where you choose who is send the message
Cc: Carbon Copy - sends a copy to the addressee as well as this address, both recipients can see the Cc address
Bcc: Blind Carbon Copy - sends a copy to the addressee as well as this address. The Bcc address can see the “To” address, but the “To” address cannot see the “Bcc” address
Subject: Topic of the email
Body: The textual body of the email
Font style: Change via the underlined “A” icon at the bottom
Attachments: Add via the paperclip icon at the bottom
Add a link: The chain link icon near the bottom
3) In the top right corner there is a two-sided arrow, this will enlarge and pop out the composition window. In the bottom right corner, next to the trash can, there is a dropdown arrow with additional options. When finished you can send the message by clicking “send” or using the keyboard commands (on Windows) Ctrl+S or (on Mac) Command+Enter
SOURCE MATERIAL:
https://support.google.com/mail/answer/2645922?hl=en
https://support.google.com/mail/answer/3231471?hl=en