I have a domain with some IMAP email accounts that works perfectly on every email client other than Outlook 2013. The main problem is that when Outlook syncs the IMAP account, does its send/receive function, it comes back telling me that it's successfully synced the inbox, but it hasn't. Many times, I have received an email in the inbox that Outlook fails to sync. All my other platforms sync the account just fine, which tells me that Outlook is the problem. Also, I have no problem at all with outgoing mail. It's only the incoming mail.

As part of my troubleshooting, I have deleted all Outlook profiles and started from scratch with new profiles. It still has exactly the same issue, so it's not a profile problem.

Any help you can offer is appreciated.

Hi,

Please first check if you have any views or filter applied on your Inbox in Outlook. We can try starting Outlook with /cleanviews switch to reset your custom views and then check if this issue persists. To do this, press Windows key + R to open the Run command, type outlook /cleanviews and press Enter.

Please also check the Sync Issues folder of your IMAP account to see if there is any syncing issue logged. To check it, press Ctrl + 6 to switch to Folders module, scroll down to find the Sync Issues folder.

Some antivirus software may integrate itself into Outlook. It may scan your incoming and outgoing emails and may cause unexpected behavior. If you have any antivirus software installed, please disable its integration in Outlook and then test the issue again. You need to refer to the documentation of the software or contact the support for it to disable the integration.

In addition, we can also try root your mailbox to see if it helps. To do this, go to File > Account Settings > Account Settings > double-click your IMAP account > click More Settings button > Advanced tab, enter 'Inbox' in the 'Root folder path:' field. Click OK and click Next to finish the configuration.

Hope this helps.

Regards,

Steve Fan
TechNet Community Support