Microsoft Editor is powered by AI Assistant for writing and checking grammar from Microsoft, similar to Grammarly and other services. It is already integrated into some Microsoft applications, such as Word, but is now being distributed to all Outlook applications.
Microsoft Editor was already available in the web versions of Word and Outlook (with a Microsoft 365 subscription) as well as Word for Windows. There is also a browser extension for Chrome and Edge, end which adds an editor to text boxes on web pages, similar to Grammarly extensions. It now extends to Outlook for Windows, Mac, iOS and Android.
No matter which Outlook application you use, Microsoft Editor will offer suggestions for spelling, grammar, and writing style in supported languages - anyway, once released. If you prefer your device’s own grammar tools, you can turn off Microsoft Editor from the application settings. Not yet available in Outlook.com on mobile browsers or in the Mail app on Windows 10 and Windows 11.
Microsoft says spell-checking and basic grammar checking will work with free accounts in Outlook.com, but more advanced features will require an active subscription to Microsoft 365. Advanced features are also allowed for educational, business, and corporate accounts, so if you use Outlook through school or corporate email, they should also be available there (unless the administrator turns it off).
Microsoft is also working on a brand new outlook application for windows vistabased on the web application, which does not yet seem to integrate with Microsoft Editor. However, this app is still in preview and lacks much more important features (such as offline support), so this is not too surprising. Microsoft also says more editor features come in Outlook, but the company did not provide a timeline.