How to set the default Copilot account in Outlook for Mac

There is no method in the provided documentation to set a separate “default Copilot account” in Outlook for Mac.

Copilot in Outlook is controlled at the app/account level via the Turn on Copilot toggle, and that setting applies per signed-in account across Outlook on all devices, not per individual Outlook profile or mail account. The context only documents how to:

• Turn Copilot on or off in Outlook (including on Mac) using Quick Settings > Copilot.
• Set default email accounts and profiles in Outlook for Mac, which affects mail sending behavior but not Copilot’s default account.

So Outlook for Mac supports choosing a default mail account and a default Outlook profile, but there is no documented feature to choose a distinct “default Copilot account” separate from the signed-in Outlook/Microsoft 365 account.

References:

• Turn off Copilot in Microsoft 365 apps
• Set an account as the default in Outlook for Mac
• Manage profiles or identities in Outlook for Mac