Skip to Content

Microsoft to Replace Outlook for Mac With New Universal Client

Microsoft is planning to replace Outlook for Mac with a new web-based universal Outlook client, according to Windows Central.

microsoft outlook web app

Months after announcing a complete redesign of Outlook for Mac, Microsoft is reportedly intending to scrap its current Mac app and replace it with a new client based on the Outlook web app.

Codenamed "Monarch," the project is Microsoft's attempt to build a single Outlook client across Windows, Mac, and the web. The new client will also replace the default Mail and Calendar apps on Windows 10 and unify Microsoft's entire selection of Outlook apps.

Project Monarch is said to be based on the pre-existing Outlook web app, offering the best indication of how the replacement app will look and function when it is released. While there will apparently be some native OS integrations for the likes of offline storage and notifications, the overall goal is to remain as universal as possible across platforms.

The change allows Microsoft to use the same codebase for apps on all devices, helping it to streamline development. For users, the new single client would be smaller in size and offer the same user experience across all devices.

Microsoft will reportedly begin to preview its new Outlook client toward the end of 2021, and plans to replace the Mail and Calendar apps in Windows 10 in 2022. Outlook for Mac will presumably be deprecated at some point during this timeframe.

Popular Stories

Apple Announces Special Event in New York Feature 1

Apple Teases 'A Big Week Ahead' With Announcements Starting Monday

Thursday February 26, 2026 6:06 am PST by
Apple CEO Tim Cook today teased "a big week ahead," with announcements starting Monday. His post included an #AppleLaunch hashtag with a colorful Apple logo, along with a short video that ultimately shows an Apple logo on the lid of a Mac. Apple is reportedly planning a three-day stretch of product announcements from Monday, March 2 through Wednesday, March 4, with up to five new products...
iphone fold text

iPhone Fold Crease Measurements Revealed as Device Hits Production

Wednesday February 25, 2026 5:37 am PST by
Apple has submitted production line orders for its upcoming foldable iPhone, effectively confirming that the device will launch this year, claims a Chinese leaker. According to the Weibo account "Fixed Focus Digital," assembly lines recently received the orders from Apple, which has apparently allowed the leaker to learn the crease measurements for the device's 7.8-inch inner display....
m3 macbook pro blue

M5 Pro and M5 Max MacBook Pro: What to Expect

Wednesday February 25, 2026 3:02 pm PST by
Apple is working on a new MacBook Pro that could launch next week ahead of the "Special Experience" planned for March 4, so we thought we'd highlight all of the rumors about the device so far. Design There are no rumors of design changes, and we are expecting the upcoming M5 MacBook Pro models to look just like the M4 versions. Apple will continue to offer 14-inch and 16-inch size options,...

Top Rated Comments

MakeAppleAwesomeAgain Avatar
67 months ago
It would be nice if they'd make up their mind for once and not completely change Outlook every 2-3 years.
Score: 57 Votes (Like | Disagree)
SteveAbootman Avatar
67 months ago
If I wanted the web experience for Outlook, I'd open my web browser.
Score: 50 Votes (Like | Disagree)
ruka.snow Avatar
67 months ago
This sounds like a terrible move that'll take away a rather performant app and replace it with some electron garbage. The only plus side being that could open itself to an easy Linux client.
Score: 49 Votes (Like | Disagree)
67 months ago
Unacceptable. I don’t want a web app. I want a responsive locally hosted secure application. Stop ruining apps.
Score: 44 Votes (Like | Disagree)
adepew Avatar
67 months ago
Why is it so hard to make Outlook on Mac function like Outlook on Windows? No one wants this watered down web experience.
Score: 38 Votes (Like | Disagree)
67 months ago
So I am expecting subscription prices to go down after the launch of this.
Score: 18 Votes (Like | Disagree)