It seems like 2019 has been the year of “Dark Mode” when it comes to having black background and white text on various applications and web sites. If you’re a regular user of Outlook on your mobile device, you can take advantage of that feature now. Here’s how to set it up…
Here’s what my iOS version of Outlook looks like in the regular white/light mode. To get to the configuration options, click on Inbox:

In the lower left corner, click on the Gear icon:

Scroll down to Appearance and click on that option:

Here you have the option to use the System Default, or to set Light or Dark mode on a permanent basis:

And here’s the result of changing my setting to Dark Mode:
