Some of the most popular reasons why Outlook 2016 now showing emails in inbox include the following: Before getting to how to fix the problem, we will get to the root of it and see what causes makes the application to hide emails. Part 2: How to Fix “Outlook Not Showing All Emails in Outlook”?ġ Outlook 2016 Not Showing Emails in InboxĪs highlighted above, there are several possible causes of Outlook 2016 not showing emails in inbox. Part 1: Outlook 2016 Not Showing Emails in Inbox