1 Make sure the Folders list is expanded in Outlook.com. 
2 If you do not see your list of folders, click Folders in, for instance, your Outlook.com inbox.
3 Click New folder. 
4 Type the name for the new folder.
5 Hit Enter.
Create Folders to Organize Mail in Outlook.com. To create a new folder to hold emails in Outlook.com: 1  Make sure the Folders list is expanded in Outlook.com. 2  If you do not see your list of folders, click Folders in, for instance, your Outlook.com inbox. 3  Click New folder. 4  Type the name for the new folder. 5  Hit Enter. 1 Make sure the Folders list is expanded. 2  Click on the folder beneath which you want to create the new folder. 3  Select New subfolder from the context menu that appears. 4  Type the name for the new sub-folder. 5  You can re-use a folder name from the top level, or from sub-folders to other folders. Note: This is the name for the .pst file only. You will need to name the folder separately (see next step). 1  Click. 2  You will now see the Create Microsoft Personal Folders window. 3  The name that you supply here will appear among your mail folders in Outlook; use a name that is related to the contents of the folder. Move an Outlook Data File (.pst). You can move an Outlook Data File (.pst) to another folder on your computer. These steps will require you to exit and restart Outlook. Make sure any open items are closed or saved first. The following steps assume that your Outlook Data File (.pst or .ost) appears in the Outlook Navigation Pane and is already open. If it is not, you can use Windows Explorer to move the file to another folder, or another computer, and then follow the steps in Open or close Outlook Data Files (.pst and .ost) . Exit Outlook. Open Windows Explorer and move the Outlook Data File (.pst) to the new location. Instructions. Make a folder for your Outlook email by right-clicking on the Inbox in the Navigation Pane. Select New Folder and add a name for this folder in the To field. Click OK and notice the folder appear under your inbox. Use this folder to organize the items in your inbox.  Create a New Sub-Folder in Outlook.com. To set up a new folder beneath an existing folder: 1  Make sure the Folders list is expanded. 2  Click on the folder beneath which you want to create the new folder. 3  Select New subfolder from the context menu that appears. 4  Type the name for the new sub-folder. 1 Make sure the Folders list is expanded. 2  Click on the folder beneath which you want to create the new folder. 3  Select New subfolder from the context menu that appears. 4  Type the name for the new sub-folder. 5  You can re-use a folder name from the top level, or from sub-folders to other folders. How to make a backup copy of a personal folders (.pst) file. 1  Close any mail-related programs such as Outlook, Exchange, or Microsoft Windows Messaging. 2  Click Start, point to Settings, and then click Control Panel. 3  Double-click Mail and Fax or Mail. 4  Click the Personal Folders service you want to back up. 1 Click Personal Folder file (.pst) , and then click Next. 2  Click the folder that you want to export, and then click Next. 3  In Save exported file as, type the name of the file to which the data is exported. 4  Click Finish. 1 Click Outlook Data File (.pst) , and then click Next. 2  Select the folder to export, and then click Next. 3  Click Browse, and then select the location where you want the new .pst file to be saved. 4  In the File Name box, type the name that you want to use for the new .pst file, and then click OK. 1 For example, type Transfer.pst, and then click OK. 2  Type a display name for the Personal Folders file, and then click OK. 3  Close Outlook. 4  Use the instructions in the How to make a backup copy of a .pst file section to make a backup copy of the .pst file that you want to transfer. In Outlook, a personal folder file is a file with a .pst extension that is located on your computer's hard disk instead of the server. Personal folder files contain messages, forms, files, and other personal folders. You work with a personal folder file as you would with any other file. You will need to name the folder separately (see next step). 1  Click. 2  You will now see the Create Microsoft Personal Folders window. 3  The name that you supply here will appear among your mail folders in Outlook; use a name that is related to the contents of the folder. How To Create Subfolder. 1  Right-click on your Inbox and select New Folder. 2  In the Name field, type the name you want to call it. 3  In the Folder Contains field, make sure it says Mail & Post Items. 4  In the Select where to place Folder, select Inbox. 5  Click OK.  Windows XP drive:\Documents and Settings\user\Local Settings\Application Data\Microsoft\Outlook. Tip For information about hidden folders in Windows, see Windows Help and Support. You can move your data files to a different folder on your computer. One reason to move files is to make back ups easier. If it is not, you can use Windows Explorer to move the file to another folder, or another computer, and then follow the steps in Open or close Outlook Data Files (.pst and .ost) . Exit Outlook. Open Windows Explorer and move the Outlook Data File (.pst) to the new location.
http://email.about.com/od/Outlook.com-Tips/qt/How-to-Create-Folders-to-Organize-Mail-in-Outlook-com.htm https://kb.iu.edu/d/aesn https://support.office.com/en-us/article/Move-an-Outlook-Data-File-pst-to-different-folder-3E177F58-BC29-420E-AB21-61E6E3589088 http://www.ehow.com/how_6771597_create-folders-microsoft-outlook.html http://email.about.com/od/Outlook.com-Tips/qt/How-to-Create-Folders-to-Organize-Mail-in-Outlook-com.htm https://support.microsoft.com/en-us/kb/195719 https://support.microsoft.com/en-us/kb/287070 https://kb.iu.edu/d/aesn http://agsci.psu.edu/it/how-to/create-subfolder-in-outlook https://support.office.com/en-us/article/Move-an-Outlook-Data-File-pst-to-different-folder-3E177F58-BC29-420E-AB21-61E6E3589088
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