NewOutlook · Copilot Chat
Outlook: Copilot Chat available in shared and delegate mailboxes
Users with access to shared and delegate mailboxes will gain Copilot Chat functionality within classic Outlook, enabling AI-assisted capabilities for mailbox management and communication across shared resources.
Microsoft's description
Shared mailbox users and delegates with read and manage (full access) and/or mail folder-level permission will now be able to access Copilot Chat directly from their shared and delegate mailboxes in classic Outlook, when added as a resource .