Outlook now syncs your email in the background even when the app is closed

Release notes for Outlook for Windows (new)

April 10, 2026

• Copilot: Get help writing and revising emails with Copilot in chat. Click Help me write or Help me reply in an email draft to get started.
• Outlook now syncs your email in the background even when the app is closed. To change this, go to Settings > General >Offline and disable the option.
• You can now undo pin and unpin actions on emails.