Step 3: Click Exchange (this is your existing email). Step 2: Click the Mail tab and go to Accounts. Update the native Mail application on a Macintosh computer with these steps: Note: Illustrations and instructions may very depending on the version of the application you are using.
Fix Mac/OS Mail Client Fix Mail Client on Mac Devices (Desktops/Laptops) After the December Transition of Office365 On or after December 19, you will need to delete and recreate your account in the native Mail application on your Mac devices.
