Unfortunately, you cannot use a different theme for the Gmail App for Android. By default, the Gmail App comes with a completely white background. However, that does not mean you can’t personalize Gmail for Android. You must use a Mobile Browser. Most of the Mobile Browsers ask you to sign-in using your Email. And if you are using Android, you were asked to sign in the first time you bought your phone. After that initial sign-up you were logged into other platforms such as Chrome, PlayStore automatically. This makes the job easy for you if you are intending to use a different Theme for Gmail. However if you are not signed into your Gmail Account on Chrome, you need to do it if you wish to use a different Theme for Gmail. After you have logged in, follow the below-mentioned steps.

Gmail themes

You can pick a theme to change your Gmail background.

Choose from existing themes

  1. On your computer, open Gmail.
  2. In the top right, click Settings.Settings
  3. Click Themes.
  4. Click a theme. You can make changes to some themes by clicking Text Background,Text Background Vignette,Vignette or Blur.Blur
  5. Click Save.

Use one of your photos as your background

To get started, make sure you’ve uploaded the image you want to use to photos.google.com. Learn how to get started with Google Photos.

  1. On your computer, open Gmail.
  2. In the top right, click Settings.Settings
  3. Click Themes.
  4. In the bottom left, click My Photos.
  5. Choose a picture, or click Featured. If your picture looks blurry, try uploading a larger sized photo.
  6. Click Select.
  7. Near the bottom, to make changes to the theme, click Text Background,Text Background Vignette,Vignette or Blur.Blur
  8. Click Save.

Wrapping Up

The steps illustrated above are the same for iOS devices as well. However, this doesn’t mean on your iPhone, you can switch to a different Theme from within the Gmail App. You need to first login using a Mobile Browser, it doesn’t necessarily need to be Chrome. Also, the steps are the same for Windows too. On your laptop simply follow the above-mentioned steps to switch to a new Gmail Theme or use one of your pictures as the Theme.