Insert Your Image in Gmail Background
Log in to your Gmail account and click on settings.
In the settings page click on themes tab
In themes scroll down to the end of the page and click on “Create your own theme”.
A new pop up window will open. There you can select your own color combinations for your inbox and a background image for the theme
Choose Your Image

When you are done just click on the “save” button and then “close”.
Now you can see your own custom theme in action in your Gmail account.
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