I ran into a "blocking function" in getting IMAP working with Outlook 2013 recently. There is a feature in Outlook 2013 that requires you to Test Account Settings ... before an IMAP email account will be created the first time. The testing is mandatory with no apparent way to turn it off.
It turns out that the IMAP server I was trying to connect to has a digital certificate issue that prompts via GUI a user acknowledgement to agree to use the certificate. However, when you are doing a Test Account Settings ... setup the first time the certificate dialog never comes up and the testing fails. A failed test means the account won't be created.
The work around I found was to create a working IMAP connection using my GMAIL account, and then re-editing the IMAP settings for the server that I wanted to connect to. And in that case you can turn off the Test Account Settings option.