|One of the major annoyances with IMAP in Outlook, is that contrary to what you might expect, sending messages with your new IMAP account does not place a copy of the message in the IMAP sent folder, it places it in the default sent folder, which is under "Personal Folders"
If one of the reasons for choosing IMAP, is to keep a backup copy of your incoming and outgoing messages on the server, then this presents a problem because your sent messages would not be saved on the server, only in Outlook.
Fortunately, there is a work around.
In Outlook 2007 and up, it is a simple settings change. SEE ARTICLE BELOW
In Outlook 2003, you need to create a new Rule
to have Outlook automatically copy the sent messages to the correct folder.