However, you may not see the email configuration steps exactly same as they are in the later version (i.e. See how you can configure your IMAP account on Outlook 2013. However, one or more incompatible updates might cause some issues, such as IMAP synchronization problem.
Due to the IMAP issues affecting Outlook 2013 and Office 365, users fail to download their email messages and go on for emailing over the communication channel established.
But user can login to OWA (Outlook Web Access) or to continue to access the missing email messages, appointments, contacts, tasks, journal entries, notes, posted items, and documents.
The problem is likely to be caused by corrupted OST files, and various other reasons.
only the old emails are shown, and new emails are not downloaded to Outlook, even though the status bar stated that the folder is updated.
The new contents such as emails, contacts, calendar items, tasks, notes and others are not updated and not downloaded even though user manually select “update folder” in order to pull the new data.
Try one of the following suggestions to fix the issue.
To get there to make the setting change: I've been experiencing the "can't delete IMAPS email" but you describe.
The Office 2016 upgrade is probably one of the cleanest upgrades ever, removing previous versions of Office completely.
But, after installation, there’s a bug in Outlook 2016 for IMAP email accounts where you cannot delete emails from the Inbox, and the bug happens to be because of a configuration in the email account’s Advanced settings.
If you’ve installed Office 2016 since its release on September 22, and are using Microsoft Outlook 2016 with any IMAP-enabled accounts, you might have experienced a bug.
The Office 2016 upgrade does a great job retaining previous settings, particularly for Outlook 2016.