It was referring to the increasing number of messages users receive in their mailbox We've streamlined search to make it easier than ever to find what you're looking for
For more information about working with calendars in Outlook Why integrate with Outlook mail? With the authenticator app on an MS phone

Use the Outlook mail REST API

This allows you to log in to your email account, setting it up for Outlook.

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Microsoft Outlook Personal Email and Calendar
The Microsoft Graph API supports accessing data in users' primary mailboxes and in
Microsoft Outlook Personal Email and Calendar
Integrate with and and let your app users read and respond to what's relevant to them first
Use the Outlook mail REST API
The mobile apps include most of the features available with the online Outlook
However, you can create a calendar event to which you can invite people We've streamlined search to make it easier than ever to find what you're looking for
Everything else—including Outlook Express, MSN Mail, and Windows Live Mail—is no longer relevant unless you're using outdated versions of Windows For the time being, then, right-click on the account name in the folder pane and select Properties

Use the Outlook mail REST API

This will open the default advanced mailbox by Outlook Mail.

Microsoft Outlook Personal Email and Calendar
The browser will then forget you logged in
Microsoft Outlook Personal Email and Calendar
If appropriate, as an alternative, you can extend the schema, add custom properties, and store typed data in Microsoft Graph resources
Use the Outlook mail REST API
Description Actions New event Create a new event by selecting New event