By default, Outlook checks for new messages every 30 minutes. Sometimes the interval is even longer if your computer is busy. If you feel that you have new e-mails that are not showing up in Outlook, you have a few options:
Option 1: Set up Outlook to check for new messages more often.
1. In Outlook 2016, go to File then select Options .
2. The Outlook Options...
Article Id:
19574