Microsoft has introduced a full dark mode for windows 10 Mail app today. The company has started rolling out a new update that includes a dark mode for the email portion of the app. In the previous dark mode there was a white background in emails instead of a black one. Which has now changed to black.
Microsoft has also added a toggle which allows you to switch between dark and light backgrounds in the body of emails according to your preference.
The toggle and full dark mode are similar to Microsoft’s Outlook.com service. Microsoft’s calendar portion of the Mail and Calendar app for Windows 10 remains the same and has always supported a full dark mode. You can download the latest Mail app for Windows 10 from the Microsoft Store.