Microsoft is rolling out a new update for Mail and Calendar app for Windows 10 users that bring complete dark mode to the app. The app also bumps the app to v16005.11231.20192.0.
The latest update for the Mail and Calendar app brings complete dark mode for Windows 10 (previously, email body remained white). Microsoft has also added a handy toggle on the top to switch to/from the dark mode. The toggle is squeezed between Forward and Archive buttons.
The new update is available for everyone on Windows 10 v1809 and can be downloaded from the Microsoft Store.