Google Workspace Mail - Full Screen Compose's G Suite email system has a new "compact" Compose window. This new window allows you to see your folders, open multiple compose windows, and minimize windows for later, giving you much greater flexibility when creating a new message.
If you find the Compose window to be too small, you can expand it by doing the following:

1. Click Compose.
2. Click the double-arrow icon at the top right of the compose window.
3. Enjoy a larger composition mode that displays all of the formatting options by default.

If you would like to make the larger window appear by default, click the arrow in the lower right corner of the compose window and select “Default to full-screen.”