Question about Duplicate Message Detection

Jero Cheng 140 Reputation points


My company running a full cloud o365 Exchange online.

If I send a email to Ken ( and ITgroup ( .

And Ken is a member of ITgroup.

In general,Ken will just receive 1 email.

But how if I would like to let Ken receive both emails?for Ken only,not other users.

Is it possible to do so?


A family of Microsoft email and calendar products.
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Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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Accepted answer
  1. Noah Ma-MSFT 2,340 Reputation points Microsoft Vendor

    Hi @Jero Cheng,

    Thank you for posting to Microsoft Community.

    Based on your description, I understand you want Ken could receive two emails even though he is a member of group in To box.

    I'm afraid there is no such setting that allows ken to receive two identical emails since ken is duplicate in To.

    However, after a few tests, I suggest you could create an inbox rule to work around the issue as screenshot below shows.

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    If my answer is helpful to you, please mark it as the answer so that other users can refer to it. Thank you for your support and understanding.

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