This is more of an Outlook.com bug than an Akonadi bug, but it should be work arounded. The LIST command is not allowed in the Outlook.com IMAP implementation. As a result, mail operations are extremely slow, since KMail needs to download the full mail list. Reproducible: Always Steps to Reproduce: 1. I try to update Outlook.com mail inbox 2. I get the error message A0000012: LIST command not allowed 3. Retrieving mail is extremely slow and unreliable. Actual Results: Retrieving mail is unreliable. Expected Results: I can get all of my mail.
This bug has only been reported for versions older than KDEPIM 4.14 (at most akonadi-1.3). Can anyone tell if this bug still present? If noone confirms this bug for a recent version of akonadi (part of KDE Applications 15.08 or later), it gets closed in about three months.
Just as announced in my last comment, I close this bug. If you encounter it again in a recent version (at least 5.0 aka 15.08), please open a new one unless it already exists. Thank you for all your input.