If you use the classic version of Outlook and are considering switching to the new Outlook for Windows, you will notice several interface changes. One of the most visible is the Focused Inbox feature. This feature automatically separates your inbox into two tabs: Focused for important messages and Other for the rest. The new Outlook uses a different algorithm and data source for this sorting compared to the classic Outlook. This article explains how the Focused Inbox works in the new Outlook, what changes for classic Outlook users, and how to configure it to match your workflow.
Key Takeaways: New Outlook Focused Inbox vs Classic Outlook
- View > Show Focused Inbox toggle: Enables or disables the Focused Inbox in the new Outlook ribbon.
- Message > Move to Focused or Other: Trains the algorithm by manually moving emails between tabs.
- Settings > Mail > Focused Inbox: Central location for sorting rules and trusted sender lists.
How the Focused Inbox Works in the New Outlook
The Focused Inbox in the new Outlook for Windows uses a cloud-based machine learning model hosted on Microsoft 365 servers. When an email arrives, the server analyzes the sender, your past interactions, and the message content to assign a priority score. Messages with high scores appear in the Focused tab. Messages with low scores appear in the Other tab. This processing happens before the email reaches your client, which means the sorting is consistent across all your devices, including Outlook mobile and Outlook on the web.
In classic Outlook, the Focused Inbox also uses cloud-based sorting, but the classic client applies additional local rules that can override the server decision. For example, if you have a custom mail rule that moves messages from a specific sender to a folder, that rule takes precedence in classic Outlook. In the new Outlook, the server-side Focused Inbox runs first, and then client-side rules apply only to messages that remain in the inbox. This change means that some messages that you expected in Focused might end up in Other, or vice versa, until you retrain the algorithm.
Prerequisites for Using Focused Inbox in the New Outlook
You need an active Microsoft 365 subscription. Free Outlook.com accounts also support Focused Inbox. The feature is not available for POP or IMAP accounts in the new Outlook. If you use on-premises Exchange Server, Focused Inbox is available only if your server runs Exchange Online or Exchange 2019 with the latest cumulative update and the Focused Inbox feature enabled by your administrator.
Steps to Enable and Configure Focused Inbox in the New Outlook
The following steps assume you have already installed the new Outlook for Windows and signed in with your Microsoft 365 account. The new Outlook is available as a toggle in the classic Outlook title bar.
- Open the new Outlook
Click the Try the new Outlook toggle in the upper-right corner of classic Outlook. If you do not see the toggle, your organization may have disabled it. Contact your IT administrator. - Locate the Focused Inbox toggle in the ribbon
Go to the View tab on the ribbon. In the Messages group, click Show Focused Inbox. A checkmark appears when the feature is active. Your inbox splits into two tabs: Focused and Other. - Train the algorithm by moving messages
Right-click any message in the Focused tab and select Move to Other. Right-click any message in the Other tab and select Move to Focused. Repeat this for several messages to teach the system your preferences. The server updates the priority model within 24 hours. - Adjust settings for trusted senders
Click Settings (gear icon) in the upper-right corner. Go to Mail > Focused Inbox. Under Always move messages from these senders to Focused, add email addresses or domains. Under Always move messages from these senders to Other, add addresses you want to bypass the Focused tab. Click Save. - Turn off Focused Inbox if you prefer a single inbox
Return to View > Show Focused Inbox and click it again to clear the checkmark. All messages appear in a single list sorted by date. The server still processes the sorting, but the client hides the tabs.
What Classic Outlook Users Should Know About the Transition
My Focused Inbox training did not carry over
Classic Outlook stores your Focused Inbox training data locally in a hidden folder called Conversation Action Settings. The new Outlook does not read this local data. Instead, it relies on the server-side model that was built from your actions in Outlook on the web or Outlook mobile. To rebuild your training, move several messages manually in the new Outlook as described above. After a few days, the algorithm adjusts to your preferences.
Custom mail rules override Focused Inbox in classic Outlook
In classic Outlook, if you have a rule that moves messages from a specific sender to a subfolder, that rule runs before Focused Inbox. The message never reaches the inbox, so Focused Inbox never sees it. In the new Outlook, the server-side Focused Inbox runs before client-side rules. A message can appear in the Focused tab, and then a client rule moves it to a folder. If you want a message to stay in Focused, disable the rule for that sender or adjust the rule order.
Focused Inbox is not available for shared mailboxes
In classic Outlook, you can enable Focused Inbox for a shared mailbox if you have Full Access permissions. In the new Outlook, Focused Inbox is available only for the primary mailbox of the signed-in user. Shared mailboxes always show a single inbox. If you rely on Focused Inbox for a shared mailbox, continue using classic Outlook or switch to Outlook on the web for that mailbox.
Focused Inbox in New Outlook vs Classic Outlook: Key Differences
| Item | New Outlook | Classic Outlook |
|---|---|---|
| Sorting location | Server-side before client rules | Server-side then local rules override |
| Training data storage | Cloud (Microsoft 365 server) | Local (Conversation Action Settings folder) |
| Training data migration | Not imported from classic Outlook | Not exported to new Outlook |
| Shared mailbox support | Not available | Available with Full Access permissions |
| Custom rule interaction | Server sort runs first, then client rules | Client rules run first, then Focused Inbox |
| Toggle location | View > Show Focused Inbox | View > Show Focused Inbox |
| Account types supported | Microsoft 365 and Outlook.com | Microsoft 365, Outlook.com, Exchange on-premises |
The table above summarizes the main differences that affect your daily workflow. The new Outlook simplifies the sorting model by moving it entirely to the cloud, which ensures consistency across devices but removes some local control that classic Outlook offered.
You can now enable and configure the Focused Inbox in the new Outlook and understand how it differs from the classic version. If you prefer the classic behavior, consider keeping the classic Outlook for shared mailboxes or for mailboxes where you have complex custom rules. To retrain the algorithm quickly, move at least ten messages manually from Focused to Other and vice versa. The server updates the model within 24 hours, and you can check the result by looking at the next day’s incoming messages.