dark/night mode is essential
Nowadays a dark or night mode is a necessary feature IMO.

It is my greatest pleasure to share this piece of news with you: Dark Mode is here, on the new Outlook.com!
What is Dark Mode?
Dark Mode is a more-pleasant way to read your Outlook.com email if you prefer interfaces that are less bright or if you are in a low-light environment. Dark Mode is available on the new Outlook.com experience (formerly known as the Outlook.com Beta experience) only.
How do I turn it on?
To turn on Dark Mode, open the Quick Settings panel by selecting the Gear icon at the top of your screen. The option to enable Dark Mode is near the top of the panel, immediately under Theme selection. If your browser is unable to support Dark Mode, consider using Microsoft Edge.
Why is Dark Mode not a theme?
When we designed Dark Mode, we debated having it exist in Outlook.com as a theme. We quickly concluded that the way most people would expect themes to work and the way Dark Mode works were fundamentally different. Also, we imagine that there would be a dark experience for all available themes in the future, so having Dark Mode be a separate toggle would facilitate that. Plus, this is consistent with many other applications that have a dark mode.
Will Dark Mode support themes?
Dark Mode only supports the default blue theme right now.
Why does my reading pane have a dark background for email messages I receive?
One of the most crucial principles we had when designing Dark Mode was to minimize the amount of eye strain that people felt. Many email clients on the web today advertise a dark mode, but we learned from interviews with others and our own usage that having the reading pane be on-light while the rest of the interface was left on-dark often made the experience worse than if the full screen were left on-light.
For 2017’s Halloween Theme, we experimented with placing a light gray background in the reading pane. While that resulted in a decrease in eye strain, the design wasn’t ultimately one that we liked for various reasons. We iterated on this problem a couple more times before landing on the solution that you now see, where email messages that you receive are recolored in a secret way that preserves the readability of the original message and preserves the intent of the original sender.
How do I see the original formatting?
You can see any email message that you receive in the original formatting by using the “Turn on the lights” button.
Thank you so much for your patience and support. We hope you love this!
>> Philip.
386 comments
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Jeff commented
Dark mode was working yesterday and it isn't working today. I toggled it of and back on and it's still not working. I'm on Chrome 75.
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David Perianza Niño commented
Dark mode
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Revenge BM commented
like an easy on the eyes contrast mode
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Anonymous commented
Get that.
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Anonymous commented
Dark mode
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Anonymous commented
Please dark mode
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Oleg Pro.v. commented
night mode on schedule
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Louisa Doble commented
Dark mode gone!!! Please bring it back.
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Fernando commented
It would be useful to see a more agile Microsoft, one that actually fixes things while one is still alive. Took them what, almost 6 years since they broke DPI scaling in Windows to fix again, and it just takes them ages to have a proper black theme/setting/whatever. It's a pain to have a white background still on the desktop email client - not everyone likes to use the cloud-based interface... When can we see proper black theme/setting/whatever on Outlook desktop app? I'm 51, would be helpful to have this available sometime this decade still. If you guys already have that on the web version (haven't tried, don't use it), shouldn't be hard to have it in the desktop client, right?
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R Riggs commented
YES! YES! YES! To the Dark Mode. Hit'n the G-Spot baby!!! :)
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Anas Moustafa commented
Not able to turn the dark mode on ?
i can not find the option on this procedure( open the Quick Settings panel by selecting the Gear icon at the top of your screen. The option to enable Dark Mode is near the top of the panel, immediately under Theme selection)
would you please explain how i can see the option ??
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Sam commented
Email site does not work, please fix it.
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Brown, David commented
Is this available for just personal Outlook.com and not Office 365?
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Jim Lewis commented
Agree with Andrew Truckle. It would be nice to have draft REPLIES appear in Dark Mode as well. Perhaps the regular Black on White appearance is intended to alert the user that one is still working with an UNSENT draft but, hey, why not have a basically different Dark Mode appearance for a DRAFT rather than going back to blinding (battery-consuming) WHITEOUT mode.
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Ravi Bhikhie commented
****, for the first time in my 35 years of anything, Microsoft implemented a feature I requested! Good going.
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Scott Farriss commented
Seriously.....still no dark theme? You guys do know this is 2018, right?
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Anonymous commented
I just love the Dark Mode setting.
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Sin Shadow Fox commented
Glad to see you guys finally made a dark mode . . . would sure love to see it though. any estimate when dark mode will leave beta and be ready for real outlook?
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Sasha Radic commented
Thanks for listening to your customers - Dark Mode is awesome!
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James Elmer commented
great start on dark mode! Can't wait for new themes - or better yet, user customize-able themes. Future request, make the reply editor stay dark as well - which would fall in line with your release comments above.