Outlook 2016 IMAP not synching Inbox
Outlook 2016 is only pulling emails from subfolders. Inbox is empty.
In Mail, in the Navigation Pane, right-click the top folder for your IMAP account.
Click IMAP Folders…
Click a folder, and then click Unsubscribe.
Click a folder, and then click Subscribe.
If this solution doesn’t work for you try the following.
Check if the path to your Inbox is set in your Outlook 2016 settings.
To set the root folder path for your IMAP account:
File-> Account Settings-> Account Settings…
Double click on your IMAP account.
Select More Settings…
Select Advanced Tab
Option: Root folder path
Setting this to “Inbox” will do the trick.
Click OK and close all of the opened dialog boxes.