Creating a new folder in Outlook

To add a folder in Outlook, right-click on "Inbox" or any existing folder in the left sidebar, then select "New Folder" from the menu. Type a name for your folder — something specific like "Invoices" or "Project Alpha" — and press Enter. The folder appears when ready in your sidebar and is ready to receive messages.

If you are using Outlook on the web (outlook.com or Outlook 365), the process is slightly different. Click the folder icon with a plus sign next to "Folders" in the left panel, type your folder name, and click "Create". The folder will appear in your list right away.

On a phone or tablet, open Outlook, tap the menu icon (three horizontal lines), scroll to "Folders", tap the plus icon, enter your folder name, and confirm. Mobile folders sync with your desktop version, so messages you move on your phone appear in the same folder on your computer.

Key Takeaways

  • Right-click any folder in your sidebar and select "New Folder" to create a custom folder in seconds.
  • Nested folders — folders inside folders — help you organize by project, sender, or topic without cluttering your main sidebar.
  • Moving messages into folders is faster than searching for them later, especially when you receive dozens of similar emails each week.
  • Folders you create on your phone or computer sync automatically across all your devices if you use Outlook 365 or an email account connected to Microsoft.

Organizing folders into subfolders

A single list of folders can become hard to scan if you have more than five or six. Subfolders — folders nested inside other folders — let you group related messages without filling your sidebar. For example, you might create a "Clients" folder, then add subfolders inside it for each client name.

To create a subfolder, right-click the parent folder (the one you want to put it inside), select "New Folder", name it, and press Enter. The subfolder appears indented under the parent folder. Click the arrow or triangle next to the parent folder to collapse or expand the list and hide subfolders you do not need to see right now.

Outlook allows unlimited nesting depth, but three levels is usually enough. Beyond that, finding a specific folder becomes slower than using search. A practical structure might look like: "Work" (parent) → "Clients" (subfolder) → "Client Name" (sub-subfolder).

Moving messages into folders

Once your folders are set up, move messages into them by dragging and dropping. Click and hold a message in your inbox, drag it to the folder name in the sidebar, and release. The message disappears from your inbox and appears in the folder you selected.

If dragging feels awkward, right-click the message instead, select "Move", and choose your folder from the list. On mobile, swipe left on a message (iPhone) or long-press it (Android), then tap "Move" and select the destination folder.

You can move multiple messages at once. Click the first message, hold Ctrl (Windows) or Command (Mac), and click other messages to select them all. Then drag the entire selection to your folder, or right-click and choose "Move".

Using rules to move messages automatically

If you receive the same type of message repeatedly — invoices from a vendor, newsletters from a service, emails from a specific person — you can set up a rule to move them automatically. This saves you from sorting them by hand every time.

In Outlook desktop, go to "File" → "Manage Rules & Alerts" → "New Rule". Select "explore rule on messages I receive", then click "Next". Choose the condition that matches your messages (for example, "from [sender name]" or "with [specific word] in the subject"). Click "Next" again, check the box for "move it to the specified folder", select your folder, and finish.

In Outlook on the web, open a message from the sender or with the subject you want to filter, click the three dots menu, select "Create rule", set your conditions, choose "Move to folder", pick your destination, and save. Rules take effect on new messages going forward, not on messages already in your inbox.

Finding messages in folders

Once messages are sorted into folders, you can search within a specific folder instead of searching your entire mailbox. Click the folder you want to search, then type in the search box at the top. Outlook searches only that folder and any subfolders inside it, which narrows results and makes finding a specific message faster.

If you forget which folder you put a message in, search your entire mailbox by clicking "Inbox" first, then searching. You can also search by sender name, date, or subject line to narrow the results. Outlook shows you which folder each result is in, so you know where to look next time.

Backing up and syncing folders across devices

Folders you create in Outlook 365 or in an email account connected to Microsoft sync automatically to all your devices — phone, tablet, and computer. When you move a message into a folder on your desktop, it appears in that same folder on your phone within seconds.

If you use Outlook with a personal email account (like Gmail or Yahoo), sync depends on how you set up the account. IMAP accounts sync folders and messages across devices. POP3 accounts read messages to one device only and do not sync folders. Check your account settings under "File" → "Account Settings" to see which type you are using.

To back up your folders, export them to a file. In Outlook desktop, go to "File" → "Open & Export" → "Import/Export", select "Export to a file", choose "Outlook Data File (.pst)", select the folders you want to save, and pick a location on your computer. Keep this file in a safe place or on cloud storage as a backup.

Troubleshooting common folder problems

If a folder you created does not appear in your sidebar, it may be hidden. Right-click in the folder list area and select "Show Hidden Folders" or check your view settings. Some folders are hidden by default if they are empty or if you have a large number of folders.

If messages you move to a folder disappear or do not sync to your phone, check that the folder is not in your Deleted Items or Archive. Also verify that your account is set to sync — go to "File" → "Account Settings" → "Account Settings", select your email account, and make sure "Sync Email" is turned on.

If you cannot create a new folder, you may have reached your storage limit or your account permissions may be restricted. Check your mailbox size under "File" → "Account Settings" → "Account Settings" → "Storage". If you are near the limit, delete old messages or large attachments to free up space.

Frequently Asked Questions

Can I rename a folder after I create it?

Yes. Right-click the folder name and select "Rename Folder". Type the new name and press Enter. The folder keeps all its messages and rules that point to it still work.

What happens if I delete a folder?

The folder and all messages inside it move to your Deleted Items folder. You can recover it from there within 30 days by right-clicking Deleted Items, finding the folder, and dragging it back to your sidebar. After 30 days, it is permanently gone.

Can I move a folder inside another folder after I create it?

Yes. Drag the folder name to the parent folder you want it inside, or right-click it, select "Move Folder", and choose the destination. All messages inside move with it.

Do I need separate folders for each sender, or can I use one folder for multiple senders?

One folder can hold messages from many senders. Group by topic, project, or purpose instead — for example, "Receipts" for all purchase confirmations, or "Feedback" for customer replies. This is faster to search and easier to manage than dozens of single-sender folders.

Will my folders work if I switch email providers?

Folders you create in Outlook stay in Outlook. If you switch to Gmail or another email service, you can export your Outlook folders as a .pst file and import them into the new service, but the process varies by provider. Check the new service's documentation for import steps.