Near the top of the screen in Gmail, next to the sender’s name, you’ll find a small toolbar of icons for replying to and forwarding mail:
Stars the message. If the message already displays a star, tap it to remove it.Note
For more information about starred messages, see Managing Incoming Mail in Gmail.
Replies to the message’s sender only. A new email window opens, addressed to the sender, with the original email text quoted in it. If there’s an attachment in the original email, it won’t be included.
Expands the toolbar to give you more options for replying and forwarding.
The expanded toolbar gives you two more options:
If the email was sent to multiple people, this replies to the sender of the message, and to all the recipients in a new email window, with the original message quoted in it. You can always add new recipients or delete existing ones. If there’s an attachment in the original email, it won’t be included.
This opens a new email window with a blank To: field so that you can fill it in. The message includes the entire email that you had opened, including any attachments.