Outlook may not always recognize the correct folders when the IMAP mailbox is based on a “root structure” where all the other mail folders are created under the default Inbox folder.
The result is that Outlook will ignore the already existing Sent Items and Deleted Items folder on the server and create some local ones of its own.
When you set the “Root folder path” option in your account settings, Outlook will usually recognize the correct folders.
You can root your mailbox in the following way:
- File-> Account Settings-> Account Settings…
- Double click on your IMAP account.
- Button: More Options…
- Tab: Advanced
- Option: Root folder path
- Usually setting this to “Inbox” will do the trick.
- OK yourself out all of the opened dialogs.
Set a root path if your IMAP mailbox list all folders as Inbox subfolders.
(click on image for the full dialog)
Determining the root folder path
A way to determine the mailbox root is to right click on the top of your IMAP mailbox (which by default is named after your email address) and choose IMAP Folders… In the dialog that pops up, press the Query button. If all folders start with a common name followed by a dot, then that first part is your root name.
This IMAP mailbox can be rooted to the Inbox folder (click on left image to enlarge).
Thanks to MSOutlook.info for this tip, for more information on troubleshooting IMAP issues in Outlook 2013 check out this link: http://www.msoutlook.info/question/736