How to change wallpaper in yahoo mail

Unfortunately, Yahoo Mail does not allow you to change the wallpaper or background image within the email client itself. The default background image is a plain white or gray color.

However, you can customize the look and feel of your Yahoo Mail account by changing the theme or layout. Here's how:

1. Log in to your Yahoo Mail account.
2. Click on the gear icon () in the top right corner of the page.
3. Select "Settings" from the dropdown menu.
4. Scroll down to the "Themes" section.
5. Click on the "Change theme" button.
6. Choose from a variety of pre-designed themes or select "Customize" to create your own theme.
7. You can change the background color, text color, and font size to your liking.
8. Click "Save" to apply the changes.

Note that these changes will only affect the appearance of your Yahoo Mail inbox and will not change the background image of individual emails.

If you're looking for a way to change the background image of your email client, you may want to consider using a third-party email client or add-on that allows customization. However, this may require some technical expertise and may not be compatible with all email providers.