This article explains how to add a background image to an email in Outlook for Microsoft 365, Outlook 2019, Outlook 2016, Outlook 2013, and Outlook 2010.
Change the background of an email in Outlook
Add a background image to Outlook to liven up your emails and make them stand out from emails with a plain white background. In addition to giving your email background a solid color, gradient, texture, or pattern, you can also choose a custom image so that recipients see a large image behind the email text.
Open the Microsoft Outlook desktop app.
Go to the Home tab and select New Email. Or press Ctrl+N.
