Hi A. Cordes,
Thank you for posting here. About this issue, please do following steps to filter the unread email: click on your Inbox folder > click on the Search bar > in the Search tab, select Unread (see below picture). Here is an article for your reference: View only unread messages.
Moreover, if you have turned on Focused Inbox feature, then please check if the unread messages is in the Other tab.
Hope above information helps. If you still cannot find the unread email, to better assist you, please confirm following questions:
- What troubleshooting steps have you done so far?
- Please check if you can find the unread email on your web mail app.
- Please provide us the version information of your Outlook client. See: File > Office Account > About Outlook.
Regards,
Jennifer