New Outlook Conditional Formatting in Mail Partially Available: Best Workaround

You open the new Outlook for Windows and look for conditional formatting rules to color-code your inbox messages, but the feature is either missing or only partially available. This happens because the new Outlook app is still under development and has not yet ported the full conditional formatting engine from classic Outlook. This article explains why the feature is limited and provides the best workaround using categories and rules to regain message highlighting.

Why Conditional Formatting Is Only Partially Available in New Outlook

Conditional formatting in classic Outlook lets you apply font colors, background colors, and custom fonts to messages based on conditions like sender, subject, or recipient. The new Outlook for Windows, built on a web-based platform, does not yet include the full conditional formatting dialog. Microsoft is gradually migrating features, and the conditional formatting engine remains incomplete.

The partial availability means you might see a Conditional Formatting button under View > View Settings, but clicking it gives a blank dialog or an error. In some builds, the button is simply absent. This is not a bug — it is a deliberate gap in feature parity. Microsoft has stated that the new Outlook will eventually support conditional formatting, but no timeline is confirmed.

Until the full feature arrives, you cannot rely on the built-in conditional formatting UI. Instead, you must use a combination of Outlook rules and color categories to replicate the same visual effect.

Steps to Apply Conditional Formatting Using Categories as a Workaround

This workaround uses two features that are fully functional in the new Outlook: Rules and Categories. You create a rule that assigns a specific category to incoming messages, then give that category a distinct color. The category color appears as a small square next to the message subject in the message list, effectively replacing the background or font color that conditional formatting would provide.

Step 1: Create a Color Category

1. Open the Categorize menu
   In the new Outlook, go to the Home tab and click Categorize in the Tags group. Select All Categories from the dropdown.
2. Add a new category
   In the Color Categories dialog, click New. Type a name for the category that matches your formatting intent, for example “High Priority” or “Client Emails”. Choose a color from the palette. The 12 available colors are limited compared to classic Outlook, but they are sufficient for most inbox sorting needs. Click OK to save the category.
3. Apply the category manually to test
   Select any message in your inbox, click Categorize, and choose the new category. A colored square should appear next to the message. This confirms the category is working.

Step 2: Create a Rule That Assigns the Category

1. Open the Rules dialog
   Go to Home > Rules > Manage Rules & Alerts. If you have multiple accounts, select the correct email account from the dropdown at the top.
2. Create a new rule
   Click New Rule. In the Create Rule dialog, you have two options: Start from a template or from a blank rule. For conditional formatting, choose Apply rule on messages I receive and click Next.
3. Set the condition
   Select the condition that matches the formatting trigger you want. For example, check from people or public group to highlight emails from a specific sender. You can also use with specific words in the subject, sent only to me, or with importance. Type the required values in the bottom pane and click Next.
4. Set the action to assign a category
   Check assign it to the category category. In the bottom pane, click the underlined word category and select the color category you created in Step 1. Click Next.
5. Add exceptions if needed
   If you want to exclude certain messages, add exceptions such as except if sent only to me or except if from a specific sender. Click Next.
6. Name and finish the rule
   Give the rule a descriptive name like “Highlight Client Emails”. Check Run this rule now on messages already in Inbox to apply the category to existing messages. Click Finish and then OK.

Step 3: Verify the Formatting Effect

1. Check your inbox
   Messages that match the rule condition now show a colored square next to the subject line. The square is the category indicator. This is not as prominent as a full background or font color change, but it provides a clear visual cue.
2. Adjust the category color if needed
   If the color is hard to see, go back to Categorize > All Categories, select the category, and choose a different color. Changes apply instantly to all messages already assigned that category.

Common Limitations and Workaround Gaps

Category colors are less visible than conditional formatting

Classic conditional formatting can change the entire row background or the font color of the subject line. Categories only add a small colored square. To improve visibility, use high-contrast category colors like bright red or blue. Avoid pastels.

Only one category per message can be displayed

If multiple rules assign different categories to the same message, only the first category applied will show. Classic conditional formatting could layer multiple formatting rules. To avoid conflicts, design your rules so that no message can trigger more than one category rule. Use the stop processing more rules option in the rule wizard to enforce this.

No conditional formatting for sent items

Classic Outlook allowed conditional formatting on sent items in the Sent Items folder. The category workaround works only on messages you receive. For sent items, you can manually assign a category after sending, but this is not automated.

Rules run on server side — delays possible

The new Outlook uses server-side rules for most conditions. If you select a condition that requires client-side processing, such as with specific words in the body, the rule may not run in new Outlook. Stick to header-based conditions: sender, recipient, subject, and importance.

Item	Classic Outlook Conditional Formatting	New Outlook Categories Workaround
Visual effect	Full row background color, font color, font style	Small colored square next to subject
Setup location	View > View Settings > Conditional Formatting	Home > Rules > Manage Rules & Alerts
Multiple conditions	Supported with priority order	Limited to one category per message
Client vs server	Client-side only	Server-side for most conditions
Applicable folders	Inbox, Sent Items, any mail folder	Inbox only (rules apply to received mail)

You can now apply visual highlighting to your inbox in the new Outlook even though the native conditional formatting feature is incomplete. Use the rule-and-category method to color-code messages by sender, subject, or importance. For a more advanced setup, consider creating multiple rules with different categories and using the stop processing more rules option to prevent overlap. If you need full row background coloring, switch back to classic Outlook temporarily by toggling the new Outlook slider off and on again from the top-right corner.