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How To Prevent Emails From Being Marked As Read In Shared Mailbox?

Ng, Yung 20 Reputation points
2026-02-12T19:04:27.7533333+00:00

Greetings, everyone!

We have a shared functional mailbox that we each monitor. That shared mailbox is opened in Outlook along with our personal mailbox. The problem is if someone opens an email sent to the shared mailbox, it is marked read for everyone. I searched this forum and tried the solutions from the previous posts (i.e., changing the Message Handling settings not to automatically mark the email as read, not marking it as read unless I specifically mark it) but it does not work. Is there anything else I can try? We are missing requests sent to the shared mailbox because we don't see any unread emails. (Before you ask, the easy/manual way of asking people not to mark the email as read unless they personally addressed it, also has not worked.) Please and thank you!

Outlook | Windows | Classic Outlook for Windows | For business
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  1. Vasil Michev 125.2K Reputation points MVP Volunteer Moderator
    2026-02-12T19:22:40.9666667+00:00

    There is no way to have a per-user (per-delegate) read status for items in shared mailboxes, if anyone (cough AI cough) tells you otherwise, they're lying :)

    You can either look for some third-party add-ins that might help, work with your users and see if you can update the process (i.e. use Categories/Flags instead of the "read" status), or consider using Microsoft 365 Groups instead (which do keep per-user status, but are otherwise missing many features that you might be used to with a shared mailbox).


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