Microsoft Outlook logo.

Tired of seeing the same, bright Outlook interface on your devices? If so, turn on dark mode and get a dark emailing experience in your favorite email client. We’ll show you how to do that in Outlook on desktop, mobile, and web.

Note: To use Outlook’s dark mode on desktop, you must be a Microsoft Office 365 subscriber. If you have another Office version, you can use a dark gray theme, which is the closest you can get to dark mode.

RELATED: Dark Mode Isn’t Better For You, But We Love It Anyway

Turn On Dark Mode in Outlook on Windows and Mac

The way you enable dark mode in the desktop version of Outlook differs between Windows and Mac. Follow the section that’s for your operating system below.

Enable Dark Mode on Windows

If you are on a Windows PC, use an option within the Outlook app to turn on dark mode. Note that that option enables dark mode in all your Office apps, including Word, Excel, and PowerPoint.

RELATED: How to Enable Dark Mode in Microsoft Office

To start, first, open Outlook on your PC. In the app’s top-left corner, click “File.”

From the sidebar that appears on the left, select “Office Account.”

On the right pane, click the “Office Theme” drop-down menu and choose “Black.” This enables dark mode in the Outlook app.

Your entire Outlook interface will turn dark, as you can see below.

Outlook on desktop in dark mode.

To turn dark mode off, click the “Office Theme” drop-down menu and choose an option other than “Black.”

Disable dark mode in Outlook on desktop.

And you are all set.

Enable Dark Mode on Mac

On a Mac, you can’t enable dark mode from within Outlook. You will have to activate your Mac’s native dark mode, which will make Outlook use the mode. Note that this mode then applies to all other apps on your Mac and not just Outlook.

To do that, check out our guide on how to turn on dark mode on Mac. Once you have done that, launch Outlook and it will have a dark interface.

RELATED: How to Turn on Dark Mode on Mac

Turn On Dark Mode in Outlook on Mobile

Outlook’s app for iPhone, iPad, and Android also offers dark mode. To enable it, first, open the Outlook app on your phone.

In the app’s top-left corner, tap your profile icon.

In the menu that opens from the left of your screen, tap “Settings” (a gear icon).

Select "Settings" in the left sidebar.

On the “Settings” page, in the “Preferences” section, tap “Appearance.”

Tap "Appearance" on the "Settings" page.

The “Appearance” page offers three themes to choose from. Here’s how each theme works:

  • Light: This option uses light mode in Outlook.
  • Dark: Select this option to enable dark mode in Outlook.
  • System: This option uses your phone’s default mode. It means, if you have enabled dark mode on your phone, Outlook will also use dark mode.

Enable "Dark" on the "Appearance" page.

Outlook will save your settings and turn the interface dark.

Outlook on mobile in dark mode.

And that’s all there is to it.

Turn On Dark Mode in Outlook on Web

If you use Outlook on the web at, you can also turn your web emailing experience dark.

To do so, open your preferred web browser on your device and launch the Outlook site. On the site, log in to your email account.

In the site’s top-right corner, click “Settings” (a gear icon).

In the “Settings” menu, enable the “Dark Mode” option.

Tip: To disable dark mode, turn off the “Dark Mode” option.

Enable "Dark Mode" in "Settings."

Outlook for web will save your preferences and quickly turn itself dark.

Outlook for web in dark mode.

And that’s how you make your favorite email client use a dark interface. Enjoy emailing!

Do you use Gmail alongside Outlook? If so, you can enable dark mode in Gmail, too.

RELATED: How to Enable Dark Mode for Gmail

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Mahesh Makvana is a freelance tech writer who specializes in writing how-to guides. He has been writing tech tutorials for over a decade now. He’s written for some of the prominent tech sites including MakeUseOf, MakeTechEasier, and Online Tech Tips.
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