1. In the settings menu, look for the option to enable the preview pane. This option may be labeled as “reading pane”.
Overall, the preview pane is a useful feature that can help you stay organized and manage your emails more efficiently. So if you haven’t already, give it a try and see how it can help you better manage your inbox.
Once you’ve composed your email, click the clock icon at the bottom right-hand corner of the message, and then set an expiry date.
You may remove those messages using the most memory and free up a lot of space in your Gmail account.