How to Make a New Folder in Outlook: A Complete Guide

Organizing your inbox is one of the most practical things you can do to stay on top of your email. In Microsoft Outlook, creating folders is the foundation of any solid email management system — and it's something that works slightly differently depending on which version of Outlook you're using, what account type you have, and whether you're on desktop, web, or mobile.

Here's everything you need to know about how folders work in Outlook and how to create them.

Why Folders Matter in Outlook

Outlook isn't just an email client — it manages your calendar, contacts, tasks, and notes alongside your messages. Folders in Outlook sit within your mailbox structure and help you sort incoming mail, archive important threads, or separate work from personal correspondence.

Unlike labels in Gmail, Outlook folders are actual containers. An email lives in one folder at a time (unless you use categories or search folders, which work differently). That distinction matters when you're deciding how to structure your system.

How to Create a New Folder in Outlook Desktop (Windows & Mac)

The classic Outlook desktop app — part of Microsoft 365 or as a standalone purchase — gives you the most control over your folder structure.

On Windows:

1. Open Outlook and look at the folder pane on the left side.
2. Right-click on the mailbox name or an existing folder where you want the new folder to live.
3. Select "New Folder" from the context menu.
4. Type a name for your folder and press Enter.

You can also go to the Folder tab in the ribbon at the top and click New Folder from there. A dialog box will appear letting you name the folder and choose where to place it in your folder hierarchy.

On Mac:

1. In the left sidebar, right-click (or Control-click) on your inbox or any existing folder.
2. Choose "New Folder".
3. Name it and press Enter.

The Mac version of Outlook has seen significant redesigns in recent years, so the exact location of menu options may shift depending on whether you're using the legacy Outlook for Mac or the new Outlook for Mac (which Microsoft has been rolling out as the default).

How to Create a New Folder in Outlook on the Web

Outlook on the web (accessed through outlook.com or your organization's Microsoft 365 portal) has a clean, streamlined interface.

1. In the left-hand panel, scroll down to your folder list.
2. Hover over "Folders" — a "+" icon will appear next to it.
3. Click the "+" icon.
4. Type the name of your new folder and press Enter.

Alternatively, right-clicking on an existing folder gives you the option to "Create new subfolder", letting you build a nested structure beneath it.

📁 One thing to note: folders created in Outlook on the web sync automatically to your desktop app and mobile app if you're using an Exchange, Microsoft 365, or Outlook.com account. This is because the folders live on the server, not just on your local device.

How to Create a Folder in the Outlook Mobile App

The Outlook app for iOS and Android supports folder creation, though it's less prominent than on desktop.

1. Tap the hamburger menu (three horizontal lines) in the top-left corner.
2. Scroll down past your existing folders.
3. Tap "New Folder" (on some versions, you may need to tap a folder icon or "+" symbol).
4. Enter a name and confirm.

The mobile app is best for managing folders you've already created rather than building out complex structures from scratch — the desktop or web experience gives you much more visibility into your folder hierarchy.

Variables That Affect How Folders Work for You

Not all Outlook setups behave the same way, and a few key factors determine what your folder experience actually looks like:

Subfolders, Search Folders, and Folder Types 📂

It's worth knowing that Outlook offers more than just standard folders:

• Subfolders sit inside other folders and let you build a tiered hierarchy (e.g., a "Projects" folder containing subfolders for each project).
• Search Folders are virtual folders that display emails matching specific criteria — they don't actually move or store messages separately.
• Favorite Folders are pinned shortcuts at the top of your folder pane for quick access — not actual separate folders.

Understanding these distinctions helps you build a system that fits how you actually work, rather than over-engineering your folder tree with containers you don't need.

The New Outlook for Windows — A Note

Microsoft has been transitioning users to the new Outlook for Windows, which shares its codebase with Outlook on the web. The interface is noticeably different from classic Outlook, and some users find the folder management tools more limited in the new version — particularly around features like local folders and certain IMAP configurations.

If you toggle between classic and new Outlook, the steps for creating folders differ slightly, and some folder types (particularly local-only folders) may not be supported in the new version at all. 🖥️

What Works Depends on Your Setup

The mechanics of creating a folder are straightforward, but how that folder behaves — whether it syncs, who can see it, what types of email land there — depends on your account type, your version of Outlook, and how your organization's mail environment is configured. Someone using a personal Outlook.com account has a very different experience from someone on a corporate Exchange server with a managed IT environment, even though the steps to create the folder look nearly identical on screen.