We will discuss this issue sequently with their ultimate resolution. There are top 6 reasons due to Mac Outlook 2016, 2011 not sending or receiving emails. Instant Tips to Troubleshoot Outlook for Mac not Sending or Receiving Emails. So, let us begin now to find solution to fix Outlook 2016 Mac not sending emails.Click on Microsoft Outlook on the Toolbar. To change this: Go into the Outlook for Mac app. By default, images aren't loaded on emails in Outlook. Much like you can do on the native Apple Mail app on Mac, you can also disable image loading on the official Outlook app. How to disable image loading in Outlook on Mac.But Mac DO NOT give me an option for '+' such that i can add a custom image there. I tested, both Android and Mac supported virtual background in Blur. I've followed the webex requirement on mac a. However, for the virtual background with custom image, its only worked on my Android, but for Mac.In Outlook, open the Outlook menu and select Preferences.Click the Accounts icon, then click the plus (+) sign to add a new account.Known issues syncing Google accounts to the Microsoft Cloud. Categories no longer appear in the sidebar of individual calendars. Sending meeting updates with REST calendar sharing feature in Outlook for Mac. Outlook for Mac 2011 does not work with macOS 10.15 Catalina.