How to Create a Custom Flag in Outlook

Emma Jul 01, 2026

Ever wished you could add a personal touch to your Outlook emails? One way to do this is by creating a custom flag. Flags in Outlook help you prioritize and organize your emails, but they can be a bit bland. Here's a step-by-step guide on how to create a custom flag in Outlook to make your inbox more engaging and personalized.

DIY Guide: How to Make Custom Flags
DIY Guide: How to Make Custom Flags

Before we dive in, ensure you're using Outlook on the web or the desktop app, as the process varies slightly between platforms. Let's start with the web version.

Flag Creator
Flag Creator

Creating a Custom Flag in Outlook on the Web

Outlook on the web offers a user-friendly interface for creating custom flags. Here's how to do it:

How to Reorder a Custom Flag - Custom Flag Company
How to Reorder a Custom Flag - Custom Flag Company

First, click on the 'Settings' icon (gear icon) in the top-right corner of your Outlook inbox. Then, select 'View all Outlook settings'.

Accessing the Mail Settings

Worldbuilding: 3 Tips for Designing a Flag
Worldbuilding: 3 Tips for Designing a Flag

In the 'Settings' menu, click on 'Mail'. You'll see a variety of options, but we're interested in 'Layout and default actions'.

Scroll down to the 'Customize actions' section. Here, you'll find the default flags. To create a new one, click on the 'Add new action' button.

Creating the Custom Flag

two flags flying next to each other with the words how to make flag mockup
two flags flying next to each other with the words how to make flag mockup

In the 'Add new action' dialog box, you can name your flag, choose an icon, and select a color. Be creative with your naming and icon choice to make your flag stand out. Once you're satisfied with your design, click 'Save'.

Your custom flag will now appear in the flag menu (the flag icon next to the 'Move to' button) whenever you right-click on an email.

Creating a Custom Flag in the Outlook Desktop App

a tiger flag flying in the sky with clouds behind it and tigers logo on top
a tiger flag flying in the sky with clouds behind it and tigers logo on top

The desktop app offers more customization options, including the ability to create flags with text and icons. Here's how to create a custom flag:

First, right-click on an email in your inbox. In the context menu, select 'Assign Message Category'. This will open the 'Color Categories' dialog box.

an american flag is shown on the computer screen, and it appears to be made out of paper
an american flag is shown on the computer screen, and it appears to be made out of paper
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Accessing the Color Categories

In the dialog box, click on 'New'. This will allow you to create a new category with a custom name and color. You can also add a text description for your flag.

Once you've created your category, click 'OK'. Your custom flag will now appear in the 'Categorize' menu whenever you right-click on an email.

Customizing the Flag Icon

To add an icon to your flag, right-click on the flag in the 'Categorize' menu and select 'Format Text'. In the 'Format Text' dialog box, click on the 'Symbol' button. Here, you can choose an icon to represent your flag.

Click 'OK' to save your changes. Your custom flag with an icon will now appear in the 'Categorize' menu.

Creating custom flags in Outlook is a simple way to personalize your inbox and make your emails stand out. Whether you're using Outlook on the web or the desktop app, these steps will help you create flags that reflect your unique style. Happy flagging!