Outlook - Auto Expand Subfolders

Andrew Storm 20 Reputation points
2025-10-31T18:38:59.68+00:00

In Outlook how do I set subfolders below Inbox stay expanded or re-expand automatically on open?

Q&A advises of Pin, but I do not see any Pin options in the Inbox / Subfolders.

Microsoft 365 and Office | Other
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  1. Arlene D 17,565 Reputation points Independent Advisor
    2025-10-31T21:04:47.9466667+00:00

    Hi there, Outlook doesn’t have a setting to keep Inbox subfolders automatically expanded when you reopen the app. They collapse each time by design.

    Can you confirm if you’re using Outlook for Windows, Mac, or the web? There’s no Pin or auto-expand option for folders, so you’ll need to manually expand them after opening Outlook.

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  1. Andrew Storm 20 Reputation points
    2025-10-31T21:07:05.4066667+00:00

    New Outlook for Windows. In the Q&As it spoke about pinning, but I'm guess that applies to older versions of Outlook.

    So it may not be a feature of New Outlook

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